HID: holtek-mouse: use module_hid_driver() to simplify the code

module_hid_driver() makes the code simpler by eliminating
boilerplate code.

Reported-by: Andy Shevchenko <[e-mail]>
Signed-off-by: Wei Yongjun <[e-mail]>
Signed-off-by: Jiri Kosina <[e-mail]>

drivers/hid/hid-holtek-mouse.c

···
 	.report_fixup = holtek_mouse_report_fixup,
 };
 
-static int __init holtek_mouse_init(void)
-{
-	return hid_register_driver(&holtek_mouse_driver);
-}
-
-static void __exit holtek_mouse_exit(void)
-{
-	hid_unregister_driver(&holtek_mouse_driver);
-}
-
-module_exit(holtek_mouse_exit);
-module_init(holtek_mouse_init);
+module_hid_driver(holtek_mouse_driver);
 MODULE_LICENSE("GPL");