netdev: add more functions to netdevice ops

This patch moves neigh_setup and hard_start_xmit into the network device ops
structure. For bisection, fix all the previously converted drivers as well.
Bonding driver took the biggest hit on this.

Added a prefetch of the hard_start_xmit in the fast path to try and reduce
any impact this would have.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index 9584501..b7d438a 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -145,6 +145,7 @@
 
 static const struct net_device_ops loopback_ops = {
 	.ndo_init      = loopback_dev_init,
+	.ndo_start_xmit= loopback_xmit,
 	.ndo_get_stats = loopback_get_stats,
 };
 
@@ -155,7 +156,6 @@
 static void loopback_setup(struct net_device *dev)
 {
 	dev->mtu		= (16 * 1024) + 20 + 20 + 12;
-	dev->hard_start_xmit	= loopback_xmit;
 	dev->hard_header_len	= ETH_HLEN;	/* 14	*/
 	dev->addr_len		= ETH_ALEN;	/* 6	*/
 	dev->tx_queue_len	= 0;