rtc: rtc-sh: use module_platform_driver_probe()

Use module_platform_driver_probe() macro which makes the code smaller and
simpler.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/rtc/rtc-sh.c

@@ -820,18 +820,7 @@ static struct platform_driver sh_rtc_platform_driver = {
 	.remove		= __exit_p(sh_rtc_remove),
 };
 
-static int __init sh_rtc_init(void)
-{
-	return platform_driver_probe(&sh_rtc_platform_driver, sh_rtc_probe);
-}
-
-static void __exit sh_rtc_exit(void)
-{
-	platform_driver_unregister(&sh_rtc_platform_driver);
-}
-
-module_init(sh_rtc_init);
-module_exit(sh_rtc_exit);
+module_platform_driver_probe(sh_rtc_platform_driver, sh_rtc_probe);
 
 MODULE_DESCRIPTION("SuperH on-chip RTC driver");
 MODULE_VERSION(DRV_VERSION);