drm/amd/display: Skip powerstate DC hw access if virtual dal
[Why] On baco-enabled systems running virtual dal, can get set power state when hw is not initialized [How] Skip DC hw part of setPowerState when hw not available Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Martin Leung <martin.leung@amd.com> Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> Acked-by: Eryk Brol <eryk.brol@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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