add fwupdate-hidraw user and group

BUG=b:128880259
TEST=none

Cq-Depend: chromium:1712354
Change-Id: Ic84f5b3b14e41862a01deb23b12d697ad21f3648
Reviewed-on: https://chromium-review.googlesource.com/1710628
Tested-by: Trent Begin <tbegin@chromium.org>
Commit-Ready: Trent Begin <tbegin@chromium.org>
Legacy-Commit-Queue: Commit Bot <commit-bot@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>