All UVD instanses have only one dpm control, so it is better
to share one idle_work handle.
Signed-off-by: NJames Zhu <James.Zhu@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Tested-by: NStefan Agner <stefan@agner.ch>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>