Input: initialize serio and gameport at subsystem level

Serio and gameport cores do not depend on other drivers and are
used by code living outside of drivers/input/{gameport|serio}.
Registering them at subsystem level guarantees that they are
fully initialized before anyone tries to use them.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/gameport/gameport.c

@@ -797,5 +797,5 @@ static void __exit gameport_exit(void)
 	kthread_stop(gameport_task);
 }
 
-module_init(gameport_init);
+subsys_initcall(gameport_init);
 module_exit(gameport_exit);

drivers/input/serio/serio.c

@@ -924,5 +924,5 @@ static void __exit serio_exit(void)
 	kthread_stop(serio_task);
 }
 
-module_init(serio_init);
+subsys_initcall(serio_init);
 module_exit(serio_exit);