bpf_helpers - add declaration for bpf_ktime_get_boot_ns() am: 6b28299441

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1559292

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I35dfafacc1199afe9fc7889287ed914e0e482427
tree: b1458b98b5696158a3305b89567204263d1a742d
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. PREUPLOAD.cfg