s390x/ccw: fix oddity in machine class init

ccw_machine_class_init() uses ',' instead of ';' while initializing
the class' fields. This is almost certainly a copy/paste error and,
while legal C, rather on the unusual side. Just use ';' everywhere.
Reviewed-by: NThomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: NJens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: NCornelia Huck <cornelia.huck@de.ibm.com>

hw/s390x/s390-virtio-ccw.c

@@ -181,7 +181,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
     mc->no_serial = 1;
     mc->no_parallel = 1;
     mc->no_sdcard = 1;
-    mc->use_sclp = 1,
+    mc->use_sclp = 1;
     mc->max_cpus = 255;
     nc->nmi_monitor_handler = s390_nmi;
 }