macio: add dma_active to VMStateDescription

Make sure that we include the value of dma_active in the migration stream.
Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: NJohn Snow <jsnow@redhat.com>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

hw/ide/macio.c

@@ -517,11 +517,12 @@ static const MemoryRegionOps pmac_ide_ops = {
 
 static const VMStateDescription vmstate_pmac = {
     .name = "ide",
-    .version_id = 3,
+    .version_id = 4,
     .minimum_version_id = 0,
     .fields = (VMStateField[]) {
         VMSTATE_IDE_BUS(bus, MACIOIDEState),
         VMSTATE_IDE_DRIVES(bus.ifs, MACIOIDEState),
+        VMSTATE_BOOL(dma_active, MACIOIDEState),
         VMSTATE_END_OF_LIST()
     }
 };