[SCTP]: Add the handling of "Set Primary IP Address" parameter to INIT

The ADD-IP "Set Primary IP Address" parameter is allowed in the
INIT/INIT-ACK exchange.  Allow processing of this parameter during
the INIT/INIT-ACK.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 96621db..8a0808e 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -451,6 +451,7 @@
 	struct sctp_random_param *random;
 	struct sctp_chunks_param *chunks;
 	struct sctp_hmac_algo_param *hmac_algo;
+	struct sctp_addip_param *addip;
 };
 
 /* RFC 2960.  Section 3.3.5 Heartbeat.