drivers: thermal: Update license to SPDX format

Update licences format for core thermal files.

Signed-off-by: Lina Iyer <ilina@codeaurora.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

drivers/thermal/thermal_sysfs.c

@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  *  thermal.c - sysfs interface of thermal devices
  *
@@ -7,10 +8,6 @@
  *  Copyright (C) 2008 Intel Corp
  *  Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
  *  Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
- *
- *  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; version 2 of the License.
  */
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt