ARM: pm: samsung: move cpu_suspend into C code

Move the call to cpu_suspend into C code, and noticing that all the
s3c_cpu_save implementations are now identical, we can move this
into the common samsung code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/plat-samsung/pm.c b/arch/arm/plat-samsung/pm.c
index 3828191..3a6d076 100644
--- a/arch/arm/plat-samsung/pm.c
+++ b/arch/arm/plat-samsung/pm.c
@@ -231,7 +231,7 @@
 
 
 void (*pm_cpu_prep)(void);
-void (*pm_cpu_sleep)(void);
+void (*pm_cpu_sleep)(unsigned long);
 
 #define any_allowed(mask, allow) (((mask) & (allow)) != (allow))
 
@@ -294,11 +294,11 @@
 
 	s3c_pm_arch_stop_clocks();
 
-	/* s3c_cpu_save will also act as our return point from when
+	/* this will also act as our return point from when
 	 * we resume as it saves its own register state and restores it
 	 * during the resume.  */
 
-	s3c_cpu_save(0, PLAT_PHYS_OFFSET - PAGE_OFFSET);
+	cpu_suspend(0, PHYS_OFFSET - PAGE_OFFSET, 0, pm_cpu_sleep);
 
 	/* restore the system state */