USB: udlfb.c: remove err() usage

err() was a very old USB-specific macro that I thought had
gone away.  This patch removes it from being used in the
driver and uses dev_err() instead.

CC: Bernie Thompson <bernie@plugable.com>
CC: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/video/udlfb.c

@@ -1594,7 +1594,7 @@ static int dlfb_usb_probe(struct usb_interface *interface,
 
 	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (dev == NULL) {
-		err("dlfb_usb_probe: failed alloc of dev struct\n");
+		dev_err(&interface->dev, "dlfb_usb_probe: failed alloc of dev struct\n");
 		goto error;
 	}