staging: iio: tsl2x7x: use GPL-2.0+ SPDX license identifier

The summary text for the GPL is not needed since the SPDX identifier
is a legally binding shorthand that can be used instead.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/staging/iio/light/tsl2x7x.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Device driver for monitoring ambient light intensity in (lux) and proximity
  * detection (prox) within the TAOS TSL2X7X family of devices.
  *
  * Copyright (c) 2012, TAOS Corporation.
  * Copyright (c) 2017-2018 Brian Masney <masneyb@onstation.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that 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.
  */
 
 #include <linux/delay.h>

drivers/staging/iio/light/tsl2x7x.h

+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Device driver for monitoring ambient light intensity (lux)
  * and proximity (prox) within the TAOS TSL2X7X family of devices.
  *
  * Copyright (c) 2012, TAOS Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that 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.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA	02110-1301, USA.
  */
 
 #ifndef __TSL2X7X_H