Merge pull request #6683 from smitterl/panic_device

migrate_with_panic_device: fix for s390x

Author: cliping

libvirt/tests/cfg/migration/migrate_with_panic_device.cfg

@@ -31,3 +31,6 @@
     panic_dev = {"model": "isa", "addr_type": "isa", "addr_iobase": "0x505"}
     aarch64:
         panic_dev = {"model": "pvpanic", "addr_type": "pci"}
+    s390-virtio:
+        panic_dev = {"model": "s390"}
+        expected_match = "running.*crashed"