PCI: shpchp: Make shpchp_wq non-ordered

e24dcbef ("shpchp: update workqueue usage") was described as adding
non-ordered shpchp_wq, but it actually made it an *ordered* workqueue.

This patch changes shpchp_wq to be non-ordered, as described in the
e24dcbef commit log and as was done for pciehp by a827ea30 ("pciehp:
update workqueue usage").
Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
Acked-by: NTejun Heo <tj@kernel.org>

drivers/pci/hotplug/shpchp_core.c

@@ -366,7 +366,7 @@ static int __init shpcd_init(void)
 {
 	int retval = 0;
 
-	shpchp_wq = alloc_ordered_workqueue("shpchp", 0);
+	shpchp_wq = alloc_workqueue("shpchp", 0, 0);
 	if (!shpchp_wq)
 		return -ENOMEM;