drm/msm/sde: add ts prefill support to sde plane

Prefill with traffic shaper is used to amortize prefill
requests until the layer is active. Add ts prefill support
to sde plane.

CRs-Fixed: 2037879
Change-Id: I7bfbaed4a82d11d9bdf8de48633f3cdde4bfd53f
Signed-off-by: Alan Kwong <akwong@codeaurora.org>