start bpfloader asynchronously am: 838b81de8f am: b45a26898b

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1347789

Change-Id: I214b9285ac283643d094099000ec0fbdf86695a0
tree: d1d8a149f50e67b936da0ebd33ba0882f79b9668
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. PREUPLOAD.cfg