ARM: S3C64XX: Add SPDX license identifiers

Replace GPL license statements with SPDX license identifiers (GPL-2.0
and GPL-2.0+).

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index afd1f20..5700822 100644
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/arch/arm/mach-s3c64xx/Kconfig
@@ -1,7 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+#
 # Copyright 2008 Openmoko, Inc.
 #	Simtec Electronics, Ben Dooks <ben@simtec.co.uk>
-#
-# Licensed under GPLv2
+
 menuconfig ARCH_S3C64XX
 	bool "Samsung S3C64XX"
 	depends on ARCH_MULTI_V6