Allow to just use integer for bpf fd am: 90b02a072e am: 7e40c25066

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1498296

Change-Id: Ie3c8b35d4109c50e6d1cf3c68452007c6b100165
tree: c5e2e27e15c7f77b618dce57b6ba529f7c5b9747
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. PREUPLOAD.cfg