Moved contents of clang_cflags into cflags am: 5cfa62ca29 am: 69aab83963

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

Change-Id: Ia8b2fccd919f9a84eda513a38c7dd25b5b6ffd24
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>