staging: comedi: vmk80xx.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: Ian Abbott <abbotti@mev.co.uk>
CC: Mori Hess <fmhess@users.sourceforge.net>
CC: "J. Ali Harlow" <ali@avrc.city.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/vmk80xx.c

@@ -297,7 +297,9 @@ static void vmk80xx_rx_callback(struct urb *urb)
 		if (!usb_submit_urb(urb, GFP_KERNEL))
 			goto exit;
 
-		err("comedi#: vmk80xx: %s - submit urb failed\n", __func__);
+		dev_err(&urb->dev->dev,
+			"comedi#: vmk80xx: %s - submit urb failed\n",
+			__func__);
 
 		usb_unanchor_urb(urb);
 	}