S390: Loop through virtio console devices

We used to always create one single virtio console device. This breaks when
either zero of multiple virtio console devices are requested, so let's use
the same code as on x86.
Signed-off-by: NAlexander Graf <agraf@suse.de>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

hw/s390-virtio.c

@@ -201,7 +201,11 @@ static void s390_init(ram_addr_t ram_size,
     }
 
     /* Create VirtIO console */
-    qdev_init_nofail(qdev_create((BusState *)s390_bus, "virtio-console-s390"));
+    for(i = 0; i < MAX_VIRTIO_CONSOLES; i++) {
+        if (virtcon_hds[i]) {
+            qdev_init_nofail(qdev_create((BusState *)s390_bus, "virtio-console-s390"));
+        }
+    }
 
     /* Create VirtIO network adapters */
     for(i = 0; i < nb_nics; i++) {