drm/msm/wb: add topology support for WB display modes

This changes adds support in WB driver to provide topology
information of each display mode supported by the device.

Change-Id: Id4570854df5a28c304d5e275d53e30e3db766b87
Signed-off-by: Jeykumar Sankaran <jsanka@codeaurora.org>
2 files changed