qemu: remove panic dev models s390 and pseries when migrating

The panic devices with models s390 and pseries are autogenerated.
For backwards compatibility reasons the devices are to be removed
when migrating.
Signed-off-by: NBoris Fiuczynski <fiuczy@linux.vnet.ibm.com>
Signed-off-by: NJán Tomko <jtomko@redhat.com>

src/qemu/qemu_domain.c

@@ -3308,6 +3308,15 @@ qemuDomainDefFormatBuf(virQEMUDriverPtr driver,
             virDomainControllerDefFree(usb);
         }
 
+        /* Remove the panic device for selected models if present */
+        for (i = 0; i < def->npanics; i++) {
+            if (def->panics[i]->model == VIR_DOMAIN_PANIC_MODEL_S390 ||
+                def->panics[i]->model == VIR_DOMAIN_PANIC_MODEL_PSERIES) {
+                VIR_DELETE_ELEMENT(def->panics, i, def->npanics);
+                break;
+            }
+        }
+
         for (i = 0; i < def->nchannels; i++)
             qemuDomainChrDefDropDefaultPath(def->channels[i], driver);
     }