drm/amdgpu/vi: move virtualization detection forward

Move the detection forward into vi_set_ip_blocks function, then
add ip blocks virtualization need if device is VF.

V2: add ip blocks according to asic type.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>