net: fec: make local function fec_poll_controller() static

fec_poll_controller() was not declared. It should be static.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/fec.c

@@ -1556,7 +1556,7 @@ fec_set_mac_address(struct net_device *ndev, void *p)
  * Polled functionality used by netconsole and others in non interrupt mode
  *
  */
-void fec_poll_controller(struct net_device *dev)
+static void fec_poll_controller(struct net_device *dev)
 {
 	int i;
 	struct fec_enet_private *fep = netdev_priv(dev);