drm/amd/display: disable lttpr for RN

Signed-off-by: abdoulaye berthe <abdoulaye.berthe@amd.com>
Reviewed-by: George Shen <George.Shen@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c

@@ -1686,7 +1686,7 @@ static bool dcn21_resource_construct(
 	dc->caps.max_slave_planes = 1;
 	dc->caps.post_blend_color_processing = true;
 	dc->caps.force_dp_tps4_for_cp2520 = true;
-	dc->caps.extended_aux_timeout_support = true;
+	dc->caps.extended_aux_timeout_support = false;
 	dc->caps.dmcub_support = true;
 
 	if (dc->ctx->dce_environment == DCE_ENV_PRODUCTION_DRV)