gianfar: Add support for skb recycling

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/gianfar.h b/drivers/net/gianfar.h
index 3cb901b..811855b 100644
--- a/drivers/net/gianfar.h
+++ b/drivers/net/gianfar.h
@@ -758,6 +758,8 @@
 	unsigned int rx_stash_size;
 	unsigned int rx_stash_index;
 
+	struct sk_buff_head rx_recycle;
+
 	struct vlan_group *vlgrp;
 
 	/* Unprotected fields */