Cursors are always programmed independently of updates on other
planes. When atomic commits program cursor and surface updates
together the cursor update might be locked out by the surface
update and not take effect.

To combat this program cursor and surface updates together via
dc_update_planes_and_stream to ensure they can be applied
atomically.

When cursor updates come on their own use the old method
to program the cursor as dc_update_planes_and_stream isn't
handling this case correctly (yet), leading to a flickering
screen.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2186Reviewed-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>