This update for qemu fixes the following issues:

Security issue:

- CVE-2025-14876: qemu-kvm: Unbounded allocation in virtio-crypto (bsc#1255400).

Non security issues:

- * hw/virtio: Also include md stubs in case CONFIG_VIRTIO_PCI is not set (jsc#PED-14271).
- * s390x/pv: prepare for memory devices (jsc#PED-14271).
- * s390x/s390-skeys: prepare for memory devices (jsc#PED-14271).
- * s390x/s390-stattrib-kvm: prepare for memory devices and sparse memory layouts (jsc#PED-14271).
- * s390x/s390-virtio-ccw: prepare for memory devices (jsc#PED-14271).
- * s390x/virtio-ccw: add support for virtio based memory devices (jsc#PED-14271).
- * s390x: remember the maximum page size (jsc#PED-14271).
- * s390x: virtio-mem support (jsc#PED-14271).