platform/x86: intel_mid_thermal: Convert to use SPDX identifier

Reduce size of duplicated comments by switching to use SPDX identifier.

No functional change.

While here, correct MODULE_LICENSE() string to be aligned with license text.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

drivers/platform/x86/intel_mid_thermal.c

+// SPDX-License-Identifier: GPL-2.0
 /*
- * intel_mid_thermal.c - Intel MID platform thermal driver
+ * Intel MID platform thermal driver
  *
  * Copyright (C) 2011 Intel 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; version 2 of the License.
- *
- * 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.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  * Author: Durgadoss R <durgadoss.r@intel.com>
  */
 
@@ -566,4 +551,4 @@ module_platform_driver(mid_thermal_driver);
 
 MODULE_AUTHOR("Durgadoss R <durgadoss.r@intel.com>");
 MODULE_DESCRIPTION("Intel Medfield Platform Thermal Driver");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");