[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/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c
index 21f76b2..e4188d0 100644
--- a/drivers/net/hamradio/baycom_epp.c
+++ b/drivers/net/hamradio/baycom_epp.c
@@ -1171,7 +1171,7 @@
 	/* Fill in the fields of the device structure */
 	bc->skb = NULL;
 	
-	dev->hard_header = ax25_encapsulate;
+	dev->hard_header = ax25_hard_header;
 	dev->rebuild_header = ax25_rebuild_header;
 	dev->set_mac_address = baycom_set_mac_address;