KVER macro - support 4.9.256+ kernel am: 30af4b5487

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1584754

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: If1ff426bde32101f411769112f1594b915668e22
tree: 39e3e9230a126c9ca833e93d7d25e52219306959
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. PREUPLOAD.cfg