add SKIP_IF_XDP_NOT_SUPPORTED macro am: a36bed395f

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1555041

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I6031e2218630aea6143b5eb2d922d7f6e92a2dd7
tree: f4c7a19ce1284bb01a50c4d3ca7379f224819b8d
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. PREUPLOAD.cfg