[SERIAL] Pass sa11x0 struct device through to tty_register_device.

drivers/serial/sa1100.c

@@ -894,6 +894,7 @@ static int sa1100_serial_probe(struct device *_dev)
 			if (sa1100_ports[i].port.mapbase != res->start)
 				continue;
 
+			sa1100_ports[i].port.dev = _dev;
 			uart_add_one_port(&sa1100_reg, &sa1100_ports[i].port);
 			dev_set_drvdata(_dev, &sa1100_ports[i]);
 			break;