ARM: dts: msm: move the DSI lane map settings from panel dtsi

The DSI lane settings are dependent on the board h/w settings
and not dependent on the panel. Currently this setting is part of
the panel dtsi. Add change to move this from the panel dtsi to
the board specific dtsi files. Add corresponding driver changes
to parse the DT property correctly.

Change-Id: Ic2008eb7b0668945b0ed938dba87f94b203733eb
Signed-off-by: Padmanabhan Komanduru <pkomandu@codeaurora.org>