virtio-gpu: Destroy virgl resources on virtio-gpu reset

virtio-gpu: Destroy virgl resources on virtio-gpu reset

Properly destroy virgl resources on virtio-gpu reset to not leak resources
on a hot reboot of a VM.

Suggested-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Message-ID: <20260303151422.977399-18-dmitry.osipenko@collabora.com>
Message-ID: <20260304165043.1437519-20-alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>