qdev: qdev_hotplug is really a bool

Signed-off-by: NJuan Quintela <quintela@redhat.com>
Reviewed-by: Nzhanghailiang <zhang.zhanghailiang@huawei.com>
Reviewed-by: NEric Blake <eblake@redhat.com>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>

hw/core/qdev.c

@@ -39,7 +39,7 @@
 #include "qapi-event.h"
 #include "migration/migration.h"
 
-int qdev_hotplug = 0;
+bool qdev_hotplug = false;
 static bool qdev_hot_added = false;
 static bool qdev_hot_removed = false;
 
@@ -385,7 +385,7 @@ void qdev_machine_creation_done(void)
      * ok, initial machine setup is done, starting from now we can
      * only create hotpluggable devices
      */
-    qdev_hotplug = 1;
+    qdev_hotplug = true;
 }
 
 bool qdev_machine_modified(void)

include/hw/qdev-core.h

@@ -386,7 +386,7 @@ Object *qdev_get_machine(void);
 /* FIXME: make this a link<> */
 void qdev_set_parent_bus(DeviceState *dev, BusState *bus);
 
-extern int qdev_hotplug;
+extern bool qdev_hotplug;
 
 char *qdev_get_dev_path(DeviceState *dev);