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>
diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c
index cb51c1fb..a6f49d0 100644
--- a/drivers/net/fs_enet/fs_enet-main.c
+++ b/drivers/net/fs_enet/fs_enet-main.c
@@ -1099,7 +1099,9 @@
 	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 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