drm/amdgpu: support fw load type for yellow carp

This patch sets fw load type as direct with fw_load_type=0 for yellow carp.

Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>