ANDROID: init: GKI: enable hidden configs for GPIO

Add hidden configs to GKI_HACKS_TO_FIX so they are
enabled for loadable GPIO modules built out-of-tree

Bug: 141266428
Change-Id: Ie6e79921df67e86783f04cb869604c988656a034
Signed-off-by: Todd Kjos <tkjos@google.com>