detachables: Select power off after language selection

Set current selection to power off after exiting the languages menu.
Previously, we were just defaulting to selecting the 0 index.  However,
this won't work anymore if we hide the "Enable Developer Mode" entry
in the recovery menu due to that entry being at the 0th index.

BUG=b:63078243, b:35585623
BRANCH=None
TEST=Boot into recovery when machine in normal mode.
     Select languages menu, make language selection and make sure
     that when return to recovery menu, power off item is selected.

Change-Id: I479c2270ca99197fd8c44386ab1ca4526ae7d64a
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/565527
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed