Extract the function of fw loading out of powerplay.
Do fw loading between hw_init/resuem_phase1 and phase2
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>