ARM: mach-s5pc100: use standard arch_idle()

This is equivalent and more similar to existing architectures.
Signed-off-by: NNicolas Pitre <nico@linaro.org>

arch/arm/mach-s5pc100/common.c

@@ -129,14 +129,6 @@ static struct map_desc s5pc100_iodesc[] __initdata = {
 	}
 };
 
-static void s5pc100_idle(void)
-{
-	if (!need_resched())
-		cpu_do_idle();
-
-	local_irq_enable();
-}
-
 /*
  * s5pc100_map_io
  *
@@ -210,10 +202,6 @@ core_initcall(s5pc100_core_init);
 int __init s5pc100_init(void)
 {
 	printk(KERN_INFO "S5PC100: Initializing architecture\n");
-
-	/* set idle function */
-	pm_idle = s5pc100_idle;
-
 	return device_register(&s5pc100_dev);
 }
 

arch/arm/mach-s5pc100/include/mach/system.h

@@ -13,7 +13,7 @@
 
 static void arch_idle(void)
 {
-	/* nothing here yet */
+	cpu_do_idle();
 }
 
 #endif /* __ASM_ARCH_IRQ_H */