[AX.25]: Rename ax25_encapsulate to ax25_hard_header

Rename ax25_encapsulate to ax25_hard_header which these days more
accurately describes what the function is supposed to do.

Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/ax25.h b/include/net/ax25.h
index 227d337..5fbe99e 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -319,7 +319,7 @@
 extern int  ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
 
 /* ax25_ip.c */
-extern int  ax25_encapsulate(struct sk_buff *, struct net_device *, unsigned short, void *, void *, unsigned int);
+extern int  ax25_hard_header(struct sk_buff *, struct net_device *, unsigned short, void *, void *, unsigned int);
 extern int  ax25_rebuild_header(struct sk_buff *);
 
 /* ax25_out.c */