Integrate avb into Bazel

Integrates libavb into Bazel and invokes avb verification in the boot
demo EFI app.

Bug: 322195759
Change-Id: I7ceb019bb61a37e1948842bb8eacfa0185f61c90
17 files changed
tree: d8accd5f2343d26cc727ebfd0eddfd0905b21199
  1. gbl/
  2. libxbc/
  3. vts/
  4. .gitignore
  5. BUILD
  6. OWNERS