attestation: Add seccomp policies

BUG=chromium:357290
TEST=On each supported platform (x86, x86_64, arm), make sure that
     /usr/bin/attestation returns some uptime number.
CQ-DEPEND=CL:195622

Change-Id: Ibf2f5f79cb7d96ac749c682a6feb01b8b23d5eff
Reviewed-on: https://chromium-review.googlesource.com/195595
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Nam Nguyen <namnguyen@chromium.org>
Tested-by: Nam Nguyen <namnguyen@chromium.org>
4 files changed
tree: a0e4fa31b01e4439141da1660da679d41917c9d5
  1. attestation/
  2. buffet/
  3. common-mk/
  4. .gitignore
  5. LICENSE