ARM: dts: msm: add Atmel touch panel support for msm8909

Add Atmel touch controller device node for msm8909 CDP.
Touch controller is connected to the host processor via
I2C. Also add the touchscreen reset and interrupt signals
active, suspend and release settings as per the pinctrl
framework.

Change-Id: Ice71da6593488e804a20dd98b716e9c71788e636
Signed-off-by: Shantanu Jain <shjain@codeaurora.org>