Add hidden configs to GKI_HACKS_TO_FIX so they are enabled for loadable GPU modules built out-of-tree. Bug: 154525079 Test: rebuild kernel binary and pass checkvintf Change-Id: I51871132b6a0bd1a55f5db7a9f90177cbc20ef86 Signed-off-by: Yiwei Zhang <zzyiwei@google.com>