drm/amdgpu: add check_fw_version support for cyan_skillfish

Add check_fw_version function support for cyan_skillfish.

Signed-off-by: Lang Yu <Lang.Yu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>