fs_enet: fix polling

1. compile fix for irqreturn_t type change
2. restore ->poll_controller after CONFIG_PPC_CPM_NEW_BINDING transition
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

drivers/net/fs_enet/fs_enet-main.c

@@ -1099,7 +1099,9 @@ static int __devinit fs_enet_probe(struct of_device *ofdev,
 	ndev->stop = fs_enet_close;
 	ndev->get_stats = fs_enet_get_stats;
 	ndev->set_multicast_list = fs_set_multicast_list;
-
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	ndev->poll_controller = fs_enet_netpoll;
+#endif
 	if (fpi->use_napi)
 		netif_napi_add(ndev, &fep->napi, fs_enet_rx_napi,
 		               fpi->napi_weight);
@@ -1209,7 +1211,7 @@ static void __exit fs_cleanup(void)
 static void fs_enet_netpoll(struct net_device *dev)
 {
        disable_irq(dev->irq);
-       fs_enet_interrupt(dev->irq, dev, NULL);
+       fs_enet_interrupt(dev->irq, dev);
        enable_irq(dev->irq);
 }
 #endif