drm/nouveau: report unknown connector state if lid closed

This is in preference to disconnected.  If there's no other outputs
connected this will cause LVDS to be programmed even with the lid
closed rather than having X fail to start because of no available
outputs.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nouveau_connector.c

@@ -239,12 +239,14 @@ nouveau_connector_detect(struct drm_connector *connector)
 	if (nv_connector->dcb->type == DCB_CONNECTOR_LVDS)
 		nv_encoder = find_encoder_by_type(connector, OUTPUT_LVDS);
 	if (nv_encoder && nv_connector->native_mode) {
+		unsigned status = connector_status_connected;
+
 #ifdef CONFIG_ACPI
 		if (!nouveau_ignorelid && !acpi_lid_open())
-			return connector_status_disconnected;
+			status = connector_status_unknown;
 #endif
 		nouveau_connector_set_encoder(connector, nv_encoder);
-		return connector_status_connected;
+		return status;
 	}
 
 	/* Cleanup the previous EDID block. */