netd bpf program - use finer grained selinux privs, part 1

Make use of new BpfLoader functionality: per-map/program selinux context
to further restrict access to mainline module shipped bpf maps and programs.

Bug: 218408035
Test: booted on cuttlefish, TreeHugger
Change-Id: Iaa33754aaca8bfafef6539abfbdd30b4cdfc4727
1 file changed