drm/amd/display: Add DMCUB__PG_DONE trace code enum

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dmub/inc/dmub_trace_buffer.h

@@ -45,6 +45,7 @@ enum dmucb_trace_code {
 	DMCUB__DMCU_ISR_LOAD_END,
 	DMCUB__MAIN_IDLE,
 	DMCUB__PERF_TRACE,
+	DMCUB__PG_DONE,
 };
 
 struct dmcub_trace_buf_entry {