drm/amd/powerplay: apply Vega20 BACO workaround

Applied vdci flush workaround for Vega20 BACO.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
8 files changed