libbpf_load_test: use "data" instead of "required" for test progs am: 509131481d

Original change: https://android-review.googlesource.com/c/platform/system/bpf/+/1964747

Change-Id: I8bf4cdcf98eefcdb835fa7b9cab88bde6db25a35
tree: b9e2e586e9698de4fecb8b7921803c65c09a9158
  1. bpfloader/
  2. libbpf_android/
  3. progs/
  4. Android.bp
  5. NOTICE
  6. OWNERS
  7. OWNERS_bpf
  8. PREUPLOAD.cfg