bpf: switch to mainline netbpfload on Android S/SV2

Test: TreeHugger, manually installing tethering apex
  (with and without dnsresolver apex) on pixel 6 running S
  incl. 'atest bpf_existence_test'
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I63d4b84287e9c98dc0d2a517ac58d3f3ce9d7760
9 files changed