drm/amd/display: ensure committing streams is seamless

drm/amd/display: ensure committing streams is seamless

[ Upstream commit ca74cc428f2b9d0170c56b473dbcfd7fa01daf2d ]

[Why]
When transitioning between topologies such as multi-display to single
display ODM 2:1, pipes might not be freed before use.

[How]
In dc_commit_streams, commit an additional, minimal transition if
original transition is not seamless to ensure pipes are freed.

Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Clay King <clayking@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>