Input: gpio_keys - move to late_initcall

Initialize gpio_keys driver at late_initcall level, to give it a chance to
work with GPIO expanders that might not be ready yet if we initialize the
driver at module_init time.

This is strictly a band-aid until there is a better way to specify
inter-device dependencies.
Signed-off-by: NDavid Jander <david@protonic.nl>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

drivers/input/keyboard/gpio_keys.c

@@ -644,7 +644,7 @@ static void __exit gpio_keys_exit(void)
 	platform_driver_unregister(&gpio_keys_device_driver);
 }
 
-module_init(gpio_keys_init);
+late_initcall(gpio_keys_init);
 module_exit(gpio_keys_exit);
 
 MODULE_LICENSE("GPL");