sctp: migrate old MULTIARCH macros to VLIB_NODE_FN

Change-Id: I7248a94977fe11bbe58db53d7ca8ae8c582e7305
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
diff --git a/src/vnet/sctp/sctp.c b/src/vnet/sctp/sctp.c
index f849961..08285e4 100644
--- a/src/vnet/sctp/sctp.c
+++ b/src/vnet/sctp/sctp.c
@@ -970,6 +970,12 @@
   sctp_main_t *tm = vnet_get_sctp_main ();
   ip_main_t *im = &ip_main;
   ip_protocol_info_t *pi;
+  vlib_node_t *node = vlib_get_node_by_name (vm, (u8 *) "sctp4-established");
+  tm->sctp4_established_phase_node_index = node->index;
+
+  node = vlib_get_node_by_name (vm, (u8 *) "sctp6-established");
+  tm->sctp6_established_phase_node_index = node->index;
+
   /* Session layer, and by implication SCTP, are disabled by default */
   tm->is_enabled = 0;