sctp: make array sctp_sched_ops static

The array sctp_sched_ops  is local to the source and
does not need to be in global scope, so make it static.

Cleans up sparse warning:
symbol 'sctp_sched_ops' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/stream_sched.c

@@ -124,7 +124,7 @@ static struct sctp_sched_ops sctp_sched_fcfs = {
 extern struct sctp_sched_ops sctp_sched_prio;
 extern struct sctp_sched_ops sctp_sched_rr;
 
-struct sctp_sched_ops *sctp_sched_ops[] = {
+static struct sctp_sched_ops *sctp_sched_ops[] = {
 	&sctp_sched_fcfs,
 	&sctp_sched_prio,
 	&sctp_sched_rr,