drm/amd/display: Add debug flag for p010_mpo_support

Signed-off-by: Geling Li <geling.li@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>

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

@@ -214,6 +214,7 @@ struct dc_debug {
 	bool performance_trace;
 	bool az_endpoint_mute_only;
 	bool always_use_regamma;
+	bool p010_mpo_support;
 };
 struct dc_state;
 struct resource_pool;