drm/msm: move msm property dirty list to atomic state

Move the tracking for DRM property dirty into the atomic
state rather than keeping it with the DRM objects themselves.
This avoids a race condition between asynchronous worker
threads and property sets from future commits.

CRs-Fixed: 2062084
Change-Id: Ie33de972ad81a44e323975548d88a9d9c2a8d850
Signed-off-by: Clarence Ip <cip@codeaurora.org>