Input: use module_pci_driver

This patch converts the drivers in drivers/input/* to use module_pci_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/gameport/emu10k1-gp.c b/drivers/input/gameport/emu10k1-gp.c
index 422aa0a..daceafe 100644
--- a/drivers/input/gameport/emu10k1-gp.c
+++ b/drivers/input/gameport/emu10k1-gp.c
@@ -125,15 +125,4 @@
         .remove =       __devexit_p(emu_remove),
 };
 
-static int __init emu_init(void)
-{
-	return pci_register_driver(&emu_driver);
-}
-
-static void __exit emu_exit(void)
-{
-	pci_unregister_driver(&emu_driver);
-}
-
-module_init(emu_init);
-module_exit(emu_exit);
+module_pci_driver(emu_driver);