detachables: New screens/code path for detachable menus

Create separate code path for detachable menus.  That way,
if we need to remove one of the paths later on, it'll be
much easier.  All screens for detachable menus have the
suffix _menu.  For example, VB_SCREEN_DEVELOPER_WARNING_MENU.

BUG=b:35585623
BRANCH=None
TEST=None
CQ-DEPEND=CL:457839

Change-Id: I2edd35ea2791172ebf306be78969eb8ff006dbdd
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/457862
2 files changed