Merge changes from topic "b129773125"

* changes:
  make BpfMap.reset() harder to use
  BpfLoadTest.cpp - construct BpfMap from path not fd
  BpfMap - add pinned path based constructors
tree: f6ce364cb3ec98678aa6c1a1e432477f817083b6
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. MODULE_LICENSE_APACHE2
  6. NOTICE
  7. OWNERS
  8. PREUPLOAD.cfg