when Overdrive voltage, need to disable AVFS.
when OverDriv engine clock, need to recalculate
AVFS voltage by disable/enable avfs feature.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>