infiniband: convert c2 to net_device_ops

Convert this driver to new net_device_ops infrastructure.
Also use default net_device get-stats infrastructure

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/infiniband/hw/amso1100/c2.h

@@ -369,8 +369,6 @@ struct c2_port {
 	unsigned long mem_size;
 
 	u32 rx_buf_size;
-
-	struct net_device_stats netstats;
 };
 
 /*