pwm: i.MX: Use module_platform_driver

Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: NShawn Guo <shawn.guo@linaro.org>
Reviewed-by: NBenoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>

drivers/pwm/pwm-imx.c

@@ -271,17 +271,7 @@ static struct platform_driver imx_pwm_driver = {
 	.remove		= __devexit_p(imx_pwm_remove),
 };
 
-static int __init imx_pwm_init(void)
-{
-	return platform_driver_register(&imx_pwm_driver);
-}
-arch_initcall(imx_pwm_init);
-
-static void __exit imx_pwm_exit(void)
-{
-	platform_driver_unregister(&imx_pwm_driver);
-}
-module_exit(imx_pwm_exit);
+module_platform_driver(imx_pwm_driver);
 
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");