Merge "Add global C flags to compile_commands" into main am: ff54ac08b2

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3019322

Change-Id: I67b271f75a4df6db35f707e14f0cb61a090bf8c3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>