ARM: dts: msm: add support for truly 1200p video mode panel for msmtitanium

msm8937 target supports truly 1200p video mode panel with
NT71397 DDIC. Add the dtsi file to support this panel on
msm8937 and msmtitanium target.

CRs-fixed: 971459
Change-Id: I465b8cd922a83b8f6eaee2f6a6f536ca9ab8b8da
Signed-off-by: Vishnuvardhan Prodduturi <vproddut@codeaurora.org>