SCTP: Make sctp_verify_param return multiple indications.

SCTP-AUTH and future ADD-IP updates have a requirement to
do additional verification of parameters and an ability to
ABORT the association if verification fails.  So, introduce
additional return code so that we can clear signal a required
action.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index 73fbdf6..f30b537 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -186,6 +186,8 @@
 	SCTP_IERROR_AUTH_BAD_HMAC,
 	SCTP_IERROR_AUTH_BAD_KEYID,
 	SCTP_IERROR_PROTO_VIOLATION,
+	SCTP_IERROR_ERROR,
+	SCTP_IERROR_ABORT,
 } sctp_ierror_t;