poppy: reinstating fw ctrl functions

Putting ctrl+D, ctrl+U, ctrl+L shortcuts
back in from the fw screens.

BUG=b:35585623
BRANCH=None
TEST=reboot and try ctrl+D, etc. in fw screen to
     make sure that they have desired effects.

Change-Id: I5ca555658eddabeeea6a2f64794e6839f35d75f7
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/443349
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed