drm/amd/display: Enable gpu_vm_support for dcn3.01

[Why]
dcn3_01 supports gpu_vm, but this is not enabled in amdgpu_dm

Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Eryk Brol <eryk.brol@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>