USB: usblcd: use pr_err()

Replace the one remaining printk with pr_err().

Signed-off-by: Johan Hovold <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/usb/misc/usblcd.c

···
 
 	interface = usb_find_interface(&lcd_driver, subminor);
 	if (!interface) {
-		printk(KERN_ERR "USBLCD: %s - error, can't find device for minor %d\n",
+		pr_err("USBLCD: %s - error, can't find device for minor %d\n",
 		       __func__, subminor);
 		return -ENODEV;
 	}