obj: object header is no longer allocated automatically

include/socks/device.h

@@ -3,6 +3,7 @@
 
 #include <socks/queue.h>
 #include <socks/status.h>
+#include <socks/object.h>
 
 struct device;
 
@@ -67,6 +68,7 @@ struct bus_device {
 };
 
 struct device {
+	struct object dev_base;
 	enum device_type dev_type;
 	struct device *dev_parent;
 	struct queue dev_children;