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/irq-pm.c b/arch/arm/mach-s3c24xx/irq-pm.c
index 417b7a2..e0131b1 100644
--- a/arch/arm/mach-s3c24xx/irq-pm.c
+++ b/arch/arm/mach-s3c24xx/irq-pm.c
@@ -1,15 +1,10 @@
-/* linux/arch/arm/plat-s3c24xx/irq-om.c
- *
- * Copyright (c) 2003-2004 Simtec Electronics
- *	Ben Dooks <ben@simtec.co.uk>
- *	http://armlinux.simtec.co.uk/
- *
- * S3C24XX - IRQ PM code
- *
- * 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 (c) 2003-2004 Simtec Electronics
+//	Ben Dooks <ben@simtec.co.uk>
+//	http://armlinux.simtec.co.uk/
+//
+// S3C24XX - IRQ PM code
 
 #include <linux/init.h>
 #include <linux/module.h>