net: bcmgenet: remove unused bh_lock member

bh_lock spinlock is unused, remove it from the private driver structure.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/genet/bcmgenet.h

@@ -524,7 +524,6 @@ struct bcmgenet_priv {
 	enum bcmgenet_version version;
 	struct net_device *dev;
 	spinlock_t lock;
-	spinlock_t bh_lock;
 	u32 int0_mask;
 	u32 int1_mask;