ARM: dts: msm: display: add topology configs of nt35597 wqxga panels

NT35597 dual-dsi panels can be supported in two modes, dual layer mixers +
dual-DSI or single layer mixer + pingpong-split + dual-DSI. Add these
configurations so that targets can choose based on their requirements.

Change-Id: If1168c8f2a8e67904f6737084102b53f7c41888b
Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>
Signed-off-by: Shivaraj Shetty <shivaraj@codeaurora.org>