target-chromium-os: Conditionally add RACC related packages

Add Runtime AVL Compliance Check (RACC) packages, runtime_probe and
hardware_verifier, when USE flag "racc" is enabled.

BUG=b:162808621, chromium:1126672
TEST=Build image with USE flag +racc

Change-Id: I348efce83074981579fef3975e331c9e0ff5a183
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2411997
Commit-Queue: Kevin Lin <kevinptt@chromium.org>
Tested-by: Kevin Lin <kevinptt@chromium.org>
Reviewed-by: Allen Webb <allenwebb@google.com>
2 files changed