drm/amd/display: Read soc_bounding_box from gpu_info (v2)

[WHY]
We don't want to expose sensitive ASIC information before ASIC release.

[HOW]
Encode the soc_bounding_box in the gpu_info FW (for Linux) and read it
at driver load.

v2: fix warning when CONFIG_DRM_AMD_DC_DCN2_0 is not set (Alex)

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h

@@ -206,6 +206,13 @@ struct amdgpu_display_manager {
 
 	const struct firmware *fw_dmcu;
 	uint32_t dmcu_fw_version;
+#ifdef CONFIG_DRM_AMD_DC_DCN2_0
+	/**
+	 * gpu_info FW provided soc bounding box struct or 0 if not
+	 * available in FW
+	 */
+	const struct gpu_info_soc_bounding_box_v1_0 *soc_bounding_box;
+#endif
 };
 
 struct amdgpu_dm_connector {