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>
diff --git a/arch/arm/mach-s3c24xx/Makefile b/arch/arm/mach-s3c24xx/Makefile
index 8ac2f58..6692f2d 100644
--- a/arch/arm/mach-s3c24xx/Makefile
+++ b/arch/arm/mach-s3c24xx/Makefile
@@ -1,11 +1,9 @@
-# arch/arm/mach-s3c24xx/Makefile
+# SPDX-License-Identifier: GPL-2.0
 #
 # Copyright (c) 2012 Samsung Electronics Co., Ltd.
 #		http://www.samsung.com/
 #
 # Copyright 2007 Simtec Electronics
-#
-# Licensed under GPLv2
 
 # core