drm/amdgpu: when suspending, if uvd/vce was running. need to cancel delay work.

drm/amdgpu: when suspending, if uvd/vce was running. need to cancel delay work.

commit 85cc88f02eb0ecf44493c1b2ebb6f206cd5fc321 upstream.

fix the issue that when resume back, uvd/vce
dpm was disabled and uvd/vce's performace
dropped.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>