ARM: OMAP4: CPUidle: Avoid double idle driver registration

OMAP4 CPUidle driver registration call is under a loop which leads
to calling cpuidle_register_driver twice which is not intended.

Fix it by moving the driver registration outside the loop.
Reported-by: NNishanth Menon <nm@ti.com>
Acked-by: NNishanth Menon <nm@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NKevin Hilman <khilman@linaro.org>

arch/arm/mach-omap2/cpuidle44xx.c

@@ -222,14 +222,14 @@ int __init omap4_idle_init(void)
 	if (!cpu_clkdm[0] || !cpu_clkdm[1])
 		return -ENODEV;
 
+	cpuidle_register_driver(&omap4_idle_driver);
+
 	for_each_cpu(cpu_id, cpu_online_mask) {
 		dev = &per_cpu(omap4_idle_dev, cpu_id);
 		dev->cpu = cpu_id;
 #ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
 		dev->coupled_cpus = *cpu_online_mask;
 #endif
-		cpuidle_register_driver(&omap4_idle_driver);
-
 		if (cpuidle_register_device(dev)) {
 			pr_err("%s: CPUidle register failed\n", __func__);
 			return -EIO;