Call init_workqueues before pre smp initcalls.

This allows to create workqueues from within the context of
a pre smp initcall (aka early_initcall).

Signed-off-by: Heiko Carstens <[e-mail]>
Signed-off-by: Rusty Russell <[e-mail]>

init/main.c

···
 static void __init do_basic_setup(void)
 {
 	rcu_init_sched(); /* needed by module_init stage. */
-	/* drivers will send hotplug events */
-	init_workqueues();
 	usermodehelper_init();
 	driver_init();
 	init_irq_proc();
···
 	init_pid_ns.child_reaper = current;
 
 	cad_pid = task_pid(current);
+
+	init_workqueues();
 
 	smp_prepare_cpus(setup_max_cpus);