ovs: internal_set_rx_headroom() can be static

Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/openvswitch/vport-internal_dev.c

@@ -138,7 +138,7 @@ internal_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
 	return stats;
 }
 
-void internal_set_rx_headroom(struct net_device *dev, int new_hr)
+static void internal_set_rx_headroom(struct net_device *dev, int new_hr)
 {
 	dev->needed_headroom = new_hr;
 }