ARM: dts: msm: update panel's porch value for increase DSI clock

Current settings of DSI clock disrupted GPS signal, RF team request
to increase DSI clock from 462Mhz to 466Mhz for avoid desense issue.

Change-Id: I3242f14fe3b57b4f7dbeb8e206c0148d82fd7e46
Signed-off-by: Lei Chen <chenlei@codeaurora.org>