drm/msm/sde: add support for HDR10+

Program the MDP_TOP block's DP Dynamic HDR memory pool with
HDR10+ VSIF formatted metadata during kickoff. This metadata
is packetized by HW for sending to compatible external
displays.

Change-Id: I58f996c2a3a53b59c1c86c74014ea74300448584
Signed-off-by: Steve Cohen <cohens@codeaurora.org>