vboot/ui: add power off options

Add power off options to screens.

BRANCH=none
BUG=b:146399181, b:145098577
TEST=make runtests
TEST=USE="menu_ui" emerge-nami depthcharge

Cq-Depend: chromium:2237367
Change-Id: I356c56361a4282b456c3a4661e518a84944e983b
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2237366
Reviewed-by: Joel Kitching <kitching@chromium.org>
2 files changed