ARM: dts: msm: add support for Truly 720p video mode panel

Add support for Truly 720p video mode panel driven by NT35520
DDIC. The panel dtsi file contains panel initialization
sequence, display resolution, timing parameters and other panel
related settings.

Change-Id: I2142e36298be5d277766500ab2c622f03f3c32b9
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>