Input: keyboard - use macro module_platform_driver()

Commit 940ab88962bc1aff3273a8356d64577a6e386736 introduced a new macro to
save some platform_driver boilerplate code. Use it.

Signed-off-by: JJ Ding <dgdunix@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c
index 934aeb583..da54ad5 100644
--- a/drivers/input/keyboard/sh_keysc.c
+++ b/drivers/input/keyboard/sh_keysc.c
@@ -337,19 +337,7 @@
 		.pm	= &sh_keysc_dev_pm_ops,
 	}
 };
-
-static int __init sh_keysc_init(void)
-{
-	return platform_driver_register(&sh_keysc_device_driver);
-}
-
-static void __exit sh_keysc_exit(void)
-{
-	platform_driver_unregister(&sh_keysc_device_driver);
-}
-
-module_init(sh_keysc_init);
-module_exit(sh_keysc_exit);
+module_platform_driver(sh_keysc_device_driver);
 
 MODULE_AUTHOR("Magnus Damm");
 MODULE_DESCRIPTION("SuperH KEYSC Keypad Driver");