virtio-net: a tiny comment update

Update a comment because virtio-net now supports both
VIRTIO_NET_F_NOTF_COAL and VIRTIO_NET_F_VQ_NOTF_COAL.
Signed-off-by: Heng Qi <hengqi@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/virtio_net.c

@@ -3347,7 +3347,7 @@ static int virtnet_send_notf_coal_vq_cmds(struct virtnet_info *vi,
 static int virtnet_coal_params_supported(struct ethtool_coalesce *ec)
 {
 	/* usecs coalescing is supported only if VIRTIO_NET_F_NOTF_COAL
-	 * feature is negotiated.
+	 * or VIRTIO_NET_F_VQ_NOTF_COAL feature is negotiated.
 	 */
 	if (ec->rx_coalesce_usecs || ec->tx_coalesce_usecs)
 		return -EOPNOTSUPP;