drm/msm/sde: add support for plane layout for quadpipe topology

quad pipe topology requires 2 ctl paths where in data path involving
second mixer pair on ctl 1 will start on a new coordinate system

SSPPs will be marked with layout flag, which will be used in
staging the composition.

Change-Id: I806be6451567fbcae5590d0bca9a079cd3fa85e4
Signed-off-by: Kalyan Thota <kalyant@codeaurora.org>
8 files changed