ARM: S5P64X0: Add Power Management support

Add suspend-to-ram support for SMDK6440/50

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index bea81d0..52f1027 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2093,7 +2093,7 @@
 source "kernel/power/Kconfig"
 
 config ARCH_SUSPEND_POSSIBLE
-	depends on !ARCH_S5P64X0 && !ARCH_S5PC100
+	depends on !ARCH_S5PC100
 	depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
 		CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
 	def_bool y