only set 'bpf.progs_loaded' property on eBPF capable devices... am: 567dc56b57

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1335517

Change-Id: I267b60fcaf00b4a3393085d8a18536ffc56215ed
tree: 095745fce47a0aaa8ff9a28c42081c9244d2ed71
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. PREUPLOAD.cfg