ARM: dts: enable broadcast in nt35597 dual-dsi panels for msmcobalt

Enable broadcast mode for dual dsi command and video mode panels
nt35597 in msmcobalt platforms. This optimizes the resume time
for the panels by avoiding running twice the power-on sequence
for each interface.

CRs-Fixed: 1069775
Change-Id: If3c9db9e8bd0f0c9caa33aa9967fb80c79500a58
Signed-off-by: Ingrid Gallardo <ingridg@codeaurora.org>