ARM: dts: msm: Add support for FHD+ Video Mode Panel on SDM660

Add changes to add panel init sequence, on/off commands and other
panel properties for FHD+ Video Mode Panel.

Change-Id: Iedabdec64ea6d5882a4078c0e5d831d0547314c3
Signed-off-by: Rashi Bindra <rbindra@codeaurora.org>
Signed-off-by: Vishnuvardhan Prodduturi <vproddut@codeaurora.org>