Input: serio - use module_serio_driver

This patch converts the drivers in drivers/input/* to use
module_serio_driver() macro which makes the code smaller and
a bit simpler.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c
index 1569a39..8f9ad2f 100644
--- a/drivers/input/touchscreen/wacom_w8001.c
+++ b/drivers/input/touchscreen/wacom_w8001.c
@@ -594,15 +594,4 @@
 	.disconnect	= w8001_disconnect,
 };
 
-static int __init w8001_init(void)
-{
-	return serio_register_driver(&w8001_drv);
-}
-
-static void __exit w8001_exit(void)
-{
-	serio_unregister_driver(&w8001_drv);
-}
-
-module_init(w8001_init);
-module_exit(w8001_exit);
+module_serio_driver(w8001_drv);