[IPV6] net/ipv6/sit.c: make 2 functions static

This patch makes two needlessly global functions static.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/net/ipip.h

@@ -44,8 +44,4 @@ struct ip_tunnel
 	}								\
 } while (0)
 
-
-extern int	sit_init(void);
-extern void	sit_cleanup(void);
-
 #endif

net/ipv6/sit.c

@@ -809,7 +809,7 @@ static void __exit sit_destroy_tunnels(void)
 	}
 }
 
-void __exit sit_cleanup(void)
+static void __exit sit_cleanup(void)
 {
 	inet_del_protocol(&sit_protocol, IPPROTO_IPV6);
 
@@ -819,7 +819,7 @@ void __exit sit_cleanup(void)
 	rtnl_unlock();
 }
 
-int __init sit_init(void)
+static int __init sit_init(void)
 {
 	int err;