stm class: Add SPDX GPL-2.0 header to replace GPLv2 boilerplate

This adds SPDX GPL-2.0 header to to stm core files and removes the
GPLv2 boilerplate text.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>

drivers/hwtracing/stm/console.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Simple kernel console driver for STM devices
  * Copyright (c) 2014, Intel Corporation.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  * STM console will send kernel messages over STM devices to a trace host.
  */
 

drivers/hwtracing/stm/core.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * System Trace Module (STM) infrastructure
  * Copyright (c) 2014, Intel Corporation.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  * STM class implements generic infrastructure for  System Trace Module devices
  * as defined in MIPI STPv2 specification.
  */

drivers/hwtracing/stm/dummy_stm.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * A dummy STM device for stm/stm_source class testing.
  * Copyright (c) 2014, Intel Corporation.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  * STM class implements generic infrastructure for  System Trace Module devices
  * as defined in MIPI STPv2 specification.
  */

drivers/hwtracing/stm/heartbeat.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Simple heartbeat STM source driver
  * Copyright (c) 2016, Intel Corporation.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  * Heartbeat STM source will send repetitive messages over STM devices to a
  * trace host.
  */

drivers/hwtracing/stm/policy.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * System Trace Module (STM) master/channel allocation policy management
  * Copyright (c) 2014, Intel Corporation.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  * A master/channel allocation policy allows mapping string identifiers to
  * master and channel ranges, where allocation can be done.
  */

drivers/hwtracing/stm/stm.h

+/* SPDX-License-Identifier: GPL-2.0 */
 /*
  * System Trace Module (STM) infrastructure
  * Copyright (c) 2014, Intel Corporation.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  * STM class implements generic infrastructure for  System Trace Module devices
  * as defined in MIPI STPv2 specification.
  */

include/linux/stm.h

+// SPDX-License-Identifier: GPL-2.0
 /*
  * System Trace Module (STM) infrastructure apis
  * Copyright (C) 2014 Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
  */
 
 #ifndef _STM_H_

include/uapi/linux/stm.h

@@ -3,15 +3,6 @@
  * System Trace Module (STM) userspace interfaces
  * Copyright (c) 2014, Intel Corporation.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
  * STM class implements generic infrastructure for  System Trace Module devices
  * as defined in MIPI STPv2 specification.
  */