hw/hyperv/balloon: Consolidate OBJECT_DEFINE_SIMPLE_TYPE_WITH_INTERFACES
The QOM type of HvBalloon is declared by OBJECT_DECLARE_SIMPLE_TYPE,
which means it doesn't need the class!
Therefore, use OBJECT_DEFINE_SIMPLE_TYPE_WITH_INTERFACES to implement
the type, then there's no need for class definition.
Cc: "Maciej S. Szmigiero" <maciej.szmigiero@oracle.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Acked-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Message-ID: <
20250514084957.
2221975-6-zhao1.liu@intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>