ARM: dts: msm: add support for wqxga panel for 8939

Add support for wqxga panel for 8939 target in the device tree.
2k panel uses both the DSI interfaces, configure all the
properties for second DSI.

Change-Id: I49b6f46fd8cd593343ee079214025e5ac7c9ec7f
Signed-off-by: Kalyan Thota <kalyant@codeaurora.org>