drm/amdgpu: apply new pmfw loading sequence to arcturus and onwards

Arcturus and onwards products should follow the same sequence
that have pmfw loading ahead of tmr setup

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>