ARM: S3C24XX: Add SPDX license identifiers

Replace GPL license statements with SPDX license identifiers (GPL-2.0
and GPL-2.0+).  The h1940-bluetooth.c was licensed under GPL-1.0.  This
also adds GPL-2.0 to few files lacking license statement.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/mach-s3c24xx/simtec-pm.c

@@ -1,16 +1,11 @@
-/* linux/arch/arm/plat-s3c24xx/pm-simtec.c
- *
- * Copyright 2004 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *
- * http://armlinux.simtec.co.uk/
- *
- * Power Management helpers for Simtec S3C24XX implementations
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
-*/
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright 2004 Simtec Electronics
+//	Ben Dooks <ben@simtec.co.uk>
+//
+// http://armlinux.simtec.co.uk/
+//
+// Power Management helpers for Simtec S3C24XX implementations
 
 #include <linux/kernel.h>
 #include <linux/types.h>