SRIOV doesn't give VF cg/pg feature so the MM's idle_work
is skipped for SR-IOV
v2:
remove superfluous changes
since idle_work is not scheduled for SR-IOV so the condition
check for SR-IOV inside idle_work also can be dropped
v3:
drop the SRIOV check in amdgpu_vce/uvd_suspend
Signed-off-by: Monk Liu <Monk.Liu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>