ARM: dts: msm: add gpio_key devices for buttons on SDM845 MTP and CDP

Add pinctrl configurations for home, volume up, camera snapshot,
and camera focus buttons which utilize PM8998 GPIOs 5 through 8
respectively.  Add gpio_key devices for these buttons on SDM845
MTP and CDP targets.  Remove a #include statement that causes
compilation to fail due to an undefined pm8998_gpios phandle.

Change-Id: I2bfde12dd21ff8fe3516374d8abb50316af13a4e
Signed-off-by: David Collins <collinsd@codeaurora.org>
4 files changed