allow tagging a bpf .o as critical am: 4ba8c1c1ac am: 43d15fc5d6 am: aeb4e506a8

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1335518

Change-Id: I3b58798fa879c6be31877462114ed57a49c44f91
tree: 643774d1159e422a00838d328048ae73614ca670
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. PREUPLOAD.cfg