qdisc: fix build with !CONFIG_NET_SCHED

Multiqueue scheduler refers to default_qdisc_ops; therefore the
variable definition needs to be moved to handle case where net
scheduler API is not available.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sched/sch_api.c

@@ -131,11 +131,6 @@ static DEFINE_RWLOCK(qdisc_mod_lock);
  ************************************************/
 
 
-/* Qdisc to use by default */
-
-const struct Qdisc_ops *default_qdisc_ops = &pfifo_fast_ops;
-EXPORT_SYMBOL(default_qdisc_ops);
-
 /* The list of all installed queueing disciplines. */
 
 static struct Qdisc_ops *qdisc_base;

net/sched/sch_generic.c

@@ -30,6 +30,10 @@
 #include <net/pkt_sched.h>
 #include <net/dst.h>
 
+/* Qdisc to use by default */
+const struct Qdisc_ops *default_qdisc_ops = &pfifo_fast_ops;
+EXPORT_SYMBOL(default_qdisc_ops);
+
 /* Main transmission queue. */
 
 /* Modifications to data participating in scheduling must be protected with