inpcb: make inpcb hash insertion/removal functions private

sys/netinet/in_pcb.h

@@ -648,7 +648,6 @@ int	in_pcbconnect(struct inpcb *, struct sockaddr_in *, struct ucred *);
 void	in_pcbdisconnect(struct inpcb *);
 void	in_pcbdrop(struct inpcb *);
 void	in_pcbfree(struct inpcb *);
-int	in_pcbinshash(struct inpcb *);
 int	in_pcbladdr(const struct inpcb *, struct in_addr *, struct in_addr *,
 	    struct ucred *);
 int	in_pcblbgroup_numa(struct inpcb *, int arg);
@@ -660,8 +659,6 @@ struct inpcb *
 	in_pcblookup_mbuf(struct inpcbinfo *, struct in_addr, u_int,
 	    struct in_addr, u_int, int, struct ifnet *, struct mbuf *);
 void	in_pcbref(struct inpcb *);
-void	in_pcbrehash(struct inpcb *);
-void	in_pcbremhash_locked(struct inpcb *);
 bool	in_pcbrele(struct inpcb *, inp_lookup_t);
 bool	in_pcbrele_rlocked(struct inpcb *);
 bool	in_pcbrele_wlocked(struct inpcb *);

sys/netinet/in_pcb_var.h

@@ -55,6 +55,9 @@ int	in_pcb_lport_dest(const struct inpcb *inp, struct sockaddr *lsa,
             struct ucred *cred, int lookupflags);
 struct inpcb *in_pcblookup_local(struct inpcbinfo *, struct in_addr, u_short,
 	    int, int, struct ucred *);
+int     in_pcbinshash(struct inpcb *);
+void    in_pcbrehash(struct inpcb *);
+void    in_pcbremhash_locked(struct inpcb *);
 
 struct inpcbport {
 	struct inpcbhead phd_pcblist;