eclass-overlay: add gpio group

This group will consist of users that need to export/unexport
GPIOs. Since GPIOs are board-specific and we don't want to hand
out access to all GPIOs for anyone in this group, further
configuration to allow access from non-root users if necessary
should be left to board-specific packages.

The modem user will be placed in this group first since
modemfwd might need to toggle GPIOs to reset modems.

BUG=b:37953355
TEST=display_accts, deploy and check groups for user

Change-Id: Ibb2309245220c5b304f61d2ecacb6d83a1404944
Reviewed-on: https://chromium-review.googlesource.com/862968
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Eric Caruso <ejcaruso@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
1 file changed
tree: dc5c3892be99b3fb983d245b7d136d7eadb5bc08
  1. eclass/
  2. metadata/
  3. profiles/
  4. PRESUBMIT.cfg