drm/amd/display: add pipe split disable regkey

Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@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 52c3600..62493c4 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -170,7 +170,7 @@ struct dc_debug {
 	bool disable_hubp_power_gate;
 	bool disable_pplib_wm_range;
 	bool use_dml_wm;
-	bool use_max_voltage;
+	bool disable_pipe_split;
 	int sr_exit_time_ns;
 	int sr_enter_plus_exit_time_ns;
 	int urgent_latency_ns;