drm/amd/display: Add vendor Id for reference

Add a new vendor ID code for reference
Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Mike Hsieh <mike.hsieh@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/include/ddc_service_types.h

@@ -40,6 +40,7 @@
 #define DP_BRANCH_HW_REV_20 0x20
 
 #define DP_DEVICE_ID_38EC11 0x38EC11
+#define DP_DEVICE_ID_BA4159 0xBA4159
 #define DP_FORCE_PSRSU_CAPABILITY 0x40F
 
 #define DP_SINK_PSR_ACTIVE_VTOTAL		0x373