drm/amdgpu: rework common ucode handling for vega10

Handle ucode differences in vega10.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 886f105..f990eec 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1181,6 +1181,7 @@ struct amdgpu_firmware {
 	enum amdgpu_firmware_load_type load_type;
 	struct amdgpu_bo *fw_buf;
 	unsigned int fw_size;
+	unsigned int max_ucodes;
 };
 
 /*