inet: inet_connection_sock_af_ops const

The function block inet_connect_sock_af_ops contains no data
make it constant.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/transp_v6.h b/include/net/transp_v6.h
index bfb240c..d65381c 100644
--- a/include/net/transp_v6.h
+++ b/include/net/transp_v6.h
@@ -51,7 +51,7 @@
 /*
  *	address family specific functions
  */
-extern struct inet_connection_sock_af_ops ipv4_specific;
+extern const struct inet_connection_sock_af_ops ipv4_specific;
 
 extern void inet6_destroy_sock(struct sock *sk);