[SCTP]: make 2 functions static

This patch makes the following needlessly global functions static:
- ipv6.c: sctp_inet6addr_event()
- protocol.c: sctp_inetaddr_event()

Signed-off-by: Adrian Bunk <[e-mail]>
Signed-off-by: Sridhar Samudrala <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/net/sctp/sctp.h

···
 				     int flags);
 extern struct sctp_pf *sctp_get_pf_specific(sa_family_t family);
 extern int sctp_register_pf(struct sctp_pf *, sa_family_t);
-int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
-                        void *ptr);
 
 /*
  * sctp/socket.c

net/sctp/ipv6.c

···
 #include <asm/uaccess.h>
 
 /* Event handler for inet6 address addition/deletion events.  */
-int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev,
-                        void *ptr)
+static int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev,
+				void *ptr)
 {
 	struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
 	struct sctp_sockaddr_entry *addr;

net/sctp/protocol.c

···
 }
 
 /* Event handler for inet address addition/deletion events.  */
-int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
-                        void *ptr)
+static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
+			       void *ptr)
 {
 	struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;
 	struct sctp_sockaddr_entry *addr;