vboot: Handle power button press in broken screen

power button press is not being handled in broken screen
(VB_SCREEN_OS_BROKEN) if the user wants to exit out of it.

BUG=none
BRANCH=none
TEST=verified power button key functionality in
broken screen in Soraka board

Change-Id: I64cbb79479e3e0579aeec4e87894441acf26c9fa
Signed-off-by: Divya Chellap <divya.chellappa@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/674886
Commit-Ready: Divya Chellappa <divya.chellappa@intel.com>
Tested-by: Divya Chellappa <divya.chellappa@intel.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
1 file changed