ARM: S3C64XX: PM: Synchronise wakeup mask on suspend

Use the new wakeup mask synchronisation code to set the
relevant wakeup mask bits.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig
index ccdde04..f5a5972 100644
--- a/arch/arm/mach-s3c64xx/Kconfig
+++ b/arch/arm/mach-s3c64xx/Kconfig
@@ -7,6 +7,7 @@
 config PLAT_S3C64XX
 	bool
 	depends on ARCH_S3C64XX
+	select SAMSUNG_WAKEMASK
 	default y
 	help
 	  Base platform code for any Samsung S3C64XX device