drm/amd/display: Add stereo_support debug flag

Signed-off-by: NCharlene Liu <charlene.liu@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -217,6 +217,7 @@ struct dc_debug {
 	bool force_abm_enable;
 	bool disable_hbup_pg;
 	bool disable_dpp_pg;
+	bool stereo_support;
 };
 struct dc_state;
 struct resource_pool;