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

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

Change-Id: I0189d1d6afc3ee9ebb9bce4bbc29b8b729bfd743
tree: c5e2e27e15c7f77b618dce57b6ba529f7c5b9747
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. PREUPLOAD.cfg