USB: serial: add missing newlines to dev_<level> messages.

Add missing newlines to dev_<level> messages.

Also make some messages less verbose where appropriate.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c
index 7725ed2..504f5bff 100644
--- a/drivers/usb/serial/quatech2.c
+++ b/drivers/usb/serial/quatech2.c
@@ -372,7 +372,7 @@
 				 device_port, data, 2, QT2_USB_TIMEOUT);
 
 	if (status < 0) {
-		dev_err(&port->dev, "%s - open port failed %i", __func__,
+		dev_err(&port->dev, "%s - open port failed %i\n", __func__,
 			status);
 		kfree(data);
 		return status;