PCI Hotplug: use the new decl_subsys_name() macro instead of rolling our own.

drivers/pci/hotplug/pci_hotplug_core.c

@@ -104,19 +104,7 @@ static struct kobj_type hotplug_slot_ktype = {
 	.release = &hotplug_slot_release,
 };
 
-/* 
- * We create a struct subsystem on our own and not use decl_subsys so
- * we can have a sane name "slots" in sysfs, yet still keep a good
- * global variable name "pci_hotplug_slots_subsys.
- * If the decl_subsys() #define ever changes, this declaration will
- * need to be update to make sure everything is initialized properly.
- */
-struct subsystem pci_hotplug_slots_subsys = {
-	.kset = {
-		.kobj = { .name = "slots" },
-		.ktype = &hotplug_slot_ktype,
-	}
-};
+decl_subsys_name(pci_hotplug_slots, slots, &hotplug_slot_ktype, NULL);
 
 /* these strings match up with the values in pci_bus_speed */
 static char *pci_bus_speed_strings[] = {