net/xen-netfront: Correct printf format in xennet_get_responses

rx->status is an int16_t, print it using %d rather than %u in order to
have a meaningful value when the field is negative.

Also use %u rather than %x for rx->offset.
Signed-off-by: Julien Grall <julien.grall@citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/xen-netfront.c

@@ -733,7 +733,7 @@ static int xennet_get_responses(struct netfront_queue *queue,
 		if (unlikely(rx->status < 0 ||
 			     rx->offset + rx->status > PAGE_SIZE)) {
 			if (net_ratelimit())
-				dev_warn(dev, "rx->offset: %x, size: %u\n",
+				dev_warn(dev, "rx->offset: %u, size: %d\n",
 					 rx->offset, rx->status);
 			xennet_move_rx_slot(queue, skb, ref);
 			err = -EINVAL;