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/mach-s5p64x0/irq-eint.c b/arch/arm/mach-s5p64x0/irq-eint.c
index 494e1a8..275dc74 100644
--- a/arch/arm/mach-s5p64x0/irq-eint.c
+++ b/arch/arm/mach-s5p64x0/irq-eint.c
@@ -20,6 +20,7 @@
 #include <plat/cpu.h>
 #include <plat/regs-irqtype.h>
 #include <plat/gpio-cfg.h>
+#include <plat/pm.h>
 
 #include <mach/regs-gpio.h>
 #include <mach/regs-clock.h>
@@ -134,6 +135,7 @@
 	ct->chip.irq_mask = irq_gc_mask_set_bit;
 	ct->chip.irq_unmask = irq_gc_mask_clr_bit;
 	ct->chip.irq_set_type = s5p64x0_irq_eint_set_type;
+	ct->chip.irq_set_wake = s3c_irqext_wake;
 	ct->regs.ack = EINT0PEND_OFFSET;
 	ct->regs.mask = EINT0MASK_OFFSET;
 	irq_setup_generic_chip(gc, IRQ_MSK(16), IRQ_GC_INIT_MASK_CACHE,