drm/amd/display: Add helper for blanking all dp displays

[Why & How]
1. The code to blank all dp display have been called many times,
so add helpers in dc_link to make it more concise.
2. Add some check to fix the dmesg errors at boot and resume from S3
on dcn3.1 during DQE's promotion test.

Reviewed-by: Alvin Lee <[email protected]>
Reviewed-by: Wesley Chalmers <[email protected]>
Reviewed-by: Aric Cyr <[email protected]>
Acked-by: Anson Jacob <[email protected]>
Tested-by: Daniel Wheeler <[email protected]>
Signed-off-by: Leo (Hanghong) Ma <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>

0 files changed, 0 insertions, 0 deletions