Moved contents of clang_cflags into cflags am: 5cfa62ca29

Original change: https://android-review.googlesource.com/c/platform/system/gatekeeper/+/2069578

Change-Id: I78ef93dec8dc7dd2b601f6137deded2307845500
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>