[SCTP] Rename SCTP specific control message flags.

Rename SCTP specific control message flags to use SCTP_ prefix rather than
MSG_ prefix as per the latest sctp sockets API draft.

Signed-off-by: Ivan Skytte Jorgensen <isj-sctp@i1.dk>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 10e82ec..660c61b 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -554,7 +554,7 @@
 	dp.ppid   = sinfo->sinfo_ppid;
 
 	/* Set the flags for an unordered send.  */
-	if (sinfo->sinfo_flags & MSG_UNORDERED) {
+	if (sinfo->sinfo_flags & SCTP_UNORDERED) {
 		flags |= SCTP_DATA_UNORDERED;
 		dp.ssn = 0;
 	} else