ARM: dts: msm: enable dynamic bit clock for SDM660 MTP panel

Add DT properties to enable support for dynamic DSI bit clock
feature on NT35597 dual DSI video mode panel on SDM660.

Change-Id: I9b382a7a79ba546c8f99889a5a14d2733ea8771f
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>