arm: Use generic idle loop

Use the generic idle loop and replace enable/disable_hlt with the
respective core functions.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Russell King <linux@arm.linux.org.uk>
Tested-by: Kevin Hilman <khilman@linaro.org> # OMAP
Link: http://lkml.kernel.org/r/20130321215233.826238797@linutronix.de
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 673a4c1..dec5533 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -218,7 +218,7 @@
 
 static int omap_pm_begin(suspend_state_t state)
 {
-	disable_hlt();
+	cpu_idle_poll_ctrl(true);
 	if (cpu_is_omap34xx())
 		omap_prcm_irq_prepare();
 	return 0;
@@ -226,8 +226,7 @@
 
 static void omap_pm_end(void)
 {
-	enable_hlt();
-	return;
+	cpu_idle_poll_ctrl(false);
 }
 
 static void omap_pm_finish(void)