drm/amd/display: Safe stream encoder id in stream_status

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 0f2a16a..9cc1c28 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -510,6 +510,7 @@ enum surface_update_type {
 
 struct dc_stream_status {
 	int primary_otg_inst;
+	int stream_enc_inst;
 	int plane_count;
 	struct dc_plane_state *plane_states[MAX_SURFACE_NUM];