drm/amdgpu: add common mmhub member for adev

put mmhub_funcs and ras_if pointer into mmhub struct
Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -868,6 +868,9 @@ struct amdgpu_device {
 	/* nbio */
 	struct amdgpu_nbio		nbio;
 
+	/* mmhub */
+	struct amdgpu_mmhub		mmhub;
+
 	/* gfx */
 	struct amdgpu_gfx		gfx;
 

drivers/gpu/drm/amd/amdgpu/amdgpu_mmhub.h

@@ -28,6 +28,11 @@ struct amdgpu_mmhub_funcs {
 					void *ras_error_status);
 };
 
+struct amdgpu_mmhub {
+	struct ras_common_if *ras_if;
+	const struct amdgpu_mmhub_funcs *funcs;
+};
+
 int amdgpu_mmhub_ras_late_init(struct amdgpu_device *adev);
 
 #endif