buttons: Update button codes for vup, vdn and power
1. Differentiate button codes for short press and long press of volume
up and volume down.
2. Add a new code for volume up-down combo press since it is expected
to be used for one of the firmware screens.
3. Treat volume down long press as Ctrl-D on developer screen.
4. Treat volume up long press as Ctrl-U on developer screen.
CQ-DEPEND=CL:756254
BUG=b:64992445,b:65013794
BRANCH=None
TEST=Verified that buttons work as expected on Soraka.
Change-Id: I5d443f43f785b973f3ff4aeaac52b152ed2fe0bd
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/757123
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2 files changed
