ARM: mach-gemini: move special idle code out of line

... and hook it to arm_pm_idle.

Signed-off-by: nicolas Pitre <nicolas.pitre@linaro.org>

arch/arm/mach-gemini/idle.c

@@ -0,0 +1,29 @@
+/*
+ * arch/arm/mach-gemini/idle.c
+ */
+
+#include <linux/init.h>
+#include <asm/system.h>
+#include <asm/proc-fns.h>
+
+static void gemini_idle(void)
+{
+	/*
+	 * Because of broken hardware we have to enable interrupts or the CPU
+	 * will never wakeup... Acctualy it is not very good to enable
+	 * interrupts first since scheduler can miss a tick, but there is
+	 * no other way around this. Platforms that needs it for power saving
+	 * should call enable_hlt() in init code, since by default it is
+	 * disabled.
+	 */
+	local_irq_enable();
+	cpu_do_idle();
+}
+
+static int __init gemini_idle_init(void)
+{
+	arm_pm_idle = gemini_idle;
+	return 0;
+}
+
+arch_initcall(gemini_idle_init);