drm/i915/wopcm: Fix SPDX tag location

Move SPDX tag to first line, and update year to 2019.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190816105501.31020-6-michal.wajdeczko@intel.com

drivers/gpu/drm/i915/intel_wopcm.c

+// SPDX-License-Identifier: MIT
 /*
- * SPDX-License-Identifier: MIT
- *
- * Copyright © 2017-2018 Intel Corporation
+ * Copyright © 2017-2019 Intel Corporation
  */
 
 #include "intel_wopcm.h"