drm/amdgpu: skip set_topology_info for VF

Skip set_topology_info as xgmi TA will now block it
and host needs to program it.

Signed-off-by: Vignesh Chander <Vignesh.Chander@amd.com>
Reviewed-By : Shaoyun Liu <Shaoyun.Liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>