msm: 8064: Add gpio-keypad support for MPQ8064 CDP

The keypad supports 12 keys and is connected over
the io expander.

Change-Id: Ifd8dbb1a857b5500730c17459711c9acba6f97f8
Signed-off-by: Anirudh Ghayal <aghayal@codeaurora.org>
1 file changed