ARM: dts: msm: update truly 720p panel init sequence

Update the display timing control DCS command in Truly 720p
command mode panel to achieve 60fps frame rate with the panel.

Change-Id: Iffb6757a0706f69d74eda3224435fd627c4b8557
Signed-off-by: Sandeep Panda <spanda@codeaurora.org>