[NET] drivers/net: statistics cleanup #1 -- save memory and shrink code

We now have struct net_device_stats embedded in struct net_device,
and the default ->get_stats() hook does the obvious thing for us.

Run through drivers/net/* and remove the driver-local storage of
statistics, and driver-local ->get_stats() hook where applicable.

This was just the low-hanging fruit in drivers/net; plenty more drivers
remain to be updated.

[ Resolved conflicts with napi_struct changes and fix sunqe build
  regression... -DaveM ]

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bfin_mac.h

@@ -104,8 +104,6 @@ struct bf537mac_local {
 	 * can find out semi-useless statistics of how well the card is
 	 * performing
 	 */
-	struct net_device_stats stats;
-
 	int version;
 
 	int FlowEnabled;	/* record if data flow is active */