Input: make needlessly global code static

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/joystick/twidjoy.c b/drivers/input/joystick/twidjoy.c
index cd3a1e7..7f8b009 100644
--- a/drivers/input/joystick/twidjoy.c
+++ b/drivers/input/joystick/twidjoy.c
@@ -265,13 +265,13 @@
  * The functions for inserting/removing us as a module.
  */
 
-int __init twidjoy_init(void)
+static int __init twidjoy_init(void)
 {
 	serio_register_driver(&twidjoy_drv);
 	return 0;
 }
 
-void __exit twidjoy_exit(void)
+static void __exit twidjoy_exit(void)
 {
 	serio_unregister_driver(&twidjoy_drv);
 }