BPF: remove duplicate cflags and update btf flags. am: e0a0789c53

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/3195892

Change-Id: I353b90aec5269d6c1f8abaac8d2ccb90cfb02939
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
tree: 93fe378cf578299b270156e1c7155c594efc2914
  1. loader/
  2. progs/
  3. Android.bp
  4. NOTICE
  5. OWNERS
  6. OWNERS_bpf
  7. PREUPLOAD.cfg
  8. TEST_MAPPING