hw/vfio/ccw: Simplify using DEVICE() macro

QOM parenthood relationship is:

  VFIOCCWDevice -> S390CCWDevice -> CcwDevice -> DeviceState

We can directly use the QOM DEVICE() macro to get the parent object.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20230213170145.45666-3-philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed