ipoctal232: QOM parent field cleanup

Clean up accesses to IPOctalState::dev field and rename it.

Acked-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>

hw/char/ipoctal232.c

@@ -108,7 +108,8 @@ struct SCC2698Block {
 };
 
 struct IPOctalState {
-    IPackDevice dev;
+    IPackDevice parent_obj;
+
     SCC2698Channel ch[N_CHANNELS];
     SCC2698Block blk[N_BLOCKS];
     uint8_t irq_vector;
@@ -154,7 +155,7 @@ static const VMStateDescription vmstate_ipoctal = {
     .minimum_version_id = 1,
     .minimum_version_id_old = 1,
     .fields      = (VMStateField[]) {
-        VMSTATE_IPACK_DEVICE(dev, IPOctalState),
+        VMSTATE_IPACK_DEVICE(parent_obj, IPOctalState),
         VMSTATE_STRUCT_ARRAY(ch, IPOctalState, N_CHANNELS, 1,
                              vmstate_scc2698_channel, SCC2698Channel),
         VMSTATE_STRUCT_ARRAY(blk, IPOctalState, N_BLOCKS, 1,
@@ -172,16 +173,17 @@ static const uint8_t id_prom_data[] = {
 
 static void update_irq(IPOctalState *dev, unsigned block)
 {
+    IPackDevice *idev = IPACK_DEVICE(dev);
     /* Blocks A and B interrupt on INT0#, C and D on INT1#.
        Thus, to get the status we have to check two blocks. */
     SCC2698Block *blk0 = &dev->blk[block];
     SCC2698Block *blk1 = &dev->blk[block^1];
     unsigned intno = block / 2;
 
     if ((blk0->isr & blk0->imr) || (blk1->isr & blk1->imr)) {
-        qemu_irq_raise(dev->dev.irq[intno]);
+        qemu_irq_raise(idev->irq[intno]);
     } else {
-        qemu_irq_lower(dev->dev.irq[intno]);
+        qemu_irq_lower(idev->irq[intno]);
     }
 }