[NETFILTER]: nf_conntrack_expect: function naming unification

Currently there is a wild mix of nf_conntrack_expect_, nf_ct_exp_,
expect_, exp_, ...

Consistently use nf_ct_ as prefix for exported functions.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/netfilter/nf_nat_sip.c b/net/ipv4/netfilter/nf_nat_sip.c
index a32d746..940cdfc 100644
--- a/net/ipv4/netfilter/nf_nat_sip.c
+++ b/net/ipv4/netfilter/nf_nat_sip.c
@@ -278,7 +278,7 @@
 	/* Try to get same port: if not, try to change it. */
 	for (port = ntohs(exp->saved_proto.udp.port); port != 0; port++) {
 		exp->tuple.dst.u.udp.port = htons(port);
-		if (nf_conntrack_expect_related(exp) == 0)
+		if (nf_ct_expect_related(exp) == 0)
 			break;
 	}
 
@@ -286,7 +286,7 @@
 		return NF_DROP;
 
 	if (!mangle_sdp(pskb, ctinfo, ct, newip, port, dptr)) {
-		nf_conntrack_unexpect_related(exp);
+		nf_ct_unexpect_related(exp);
 		return NF_DROP;
 	}
 	return NF_ACCEPT;