ARM: dts: msm: enable touch controller for 8916

8916 CDP, MTP and QRD use a Synaptics touch controller. Add proper
device tree configuration to bring up the touch panel on these
platforms.

Change-Id: I31fec2f440decdd72c78801402c8e97926f81536
Signed-off-by: Himanshu Aggarwal <haggarwa@codeaurora.org>
Signed-off-by: Guoping Yu <guopingy@codeaurora.org>