[NETFILTER]: ebtables: remove casts, use consts

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/arp.h b/include/net/arp.h
index 752eb47..c236270 100644
--- a/include/net/arp.h
+++ b/include/net/arp.h
@@ -13,15 +13,17 @@
 extern int	arp_ioctl(struct net *net, unsigned int cmd, void __user *arg);
 extern void     arp_send(int type, int ptype, __be32 dest_ip,
 			 struct net_device *dev, __be32 src_ip,
-			 unsigned char *dest_hw, unsigned char *src_hw, unsigned char *th);
+			 const unsigned char *dest_hw,
+			 const unsigned char *src_hw, const unsigned char *th);
 extern int	arp_bind_neighbour(struct dst_entry *dst);
 extern int	arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir);
 extern void	arp_ifdown(struct net_device *dev);
 
 extern struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip,
 				  struct net_device *dev, __be32 src_ip,
-				  unsigned char *dest_hw, unsigned char *src_hw,
-				  unsigned char *target_hw);
+				  const unsigned char *dest_hw,
+				  const unsigned char *src_hw,
+				  const unsigned char *target_hw);
 extern void arp_xmit(struct sk_buff *skb);
 
 extern struct neigh_ops arp_broken_ops;