VCN Gate/Ungate by processing the SMU power up/down message, otherwise
S3 will resume failed as JPEG always power off during start VCN stage.
Signed-off-by: NPrike Liang <Prike.Liang@amd.com>
Reviewed-by: NEvan Quan <evan.quan@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>