timer: xilinx_timer: Convert to realize()

SysBusDevice::init is depracated. Convert to Object::init and
Device::realize as prescribed by QOM conventions.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>

hw/timer/xilinx_timer.c

@@ -204,14 +204,11 @@ static void timer_hit(void *opaque)
     timer_update_irq(t);
 }
 
-static int xilinx_timer_init(SysBusDevice *dev)
+static void xilinx_timer_realize(DeviceState *dev, Error **errp)
 {
     struct timerblock *t = XILINX_TIMER(dev);
     unsigned int i;
 
-    /* All timers share a single irq line.  */
-    sysbus_init_irq(dev, &t->irq);
-
     /* Init all the ptimers.  */
     t->timers = g_malloc0(sizeof t->timers[0] * num_timers(t));
     for (i = 0; i < num_timers(t); i++) {
@@ -226,8 +223,15 @@ static int xilinx_timer_init(SysBusDevice *dev)
 
     memory_region_init_io(&t->mmio, OBJECT(t), &timer_ops, t, "xlnx.xps-timer",
                           R_MAX * 4 * num_timers(t));
-    sysbus_init_mmio(dev, &t->mmio);
-    return 0;
+    sysbus_init_mmio(SYS_BUS_DEVICE(dev), &t->mmio);
+}
+
+static void xilinx_timer_init(Object *obj)
+{
+    struct timerblock *t = XILINX_TIMER(obj);
+
+    /* All timers share a single irq line.  */
+    sysbus_init_irq(SYS_BUS_DEVICE(obj), &t->irq);
 }
 
 static Property xilinx_timer_properties[] = {
@@ -240,9 +244,8 @@ static Property xilinx_timer_properties[] = {
 static void xilinx_timer_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
-    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 
-    k->init = xilinx_timer_init;
+    dc->realize = xilinx_timer_realize;
     dc->props = xilinx_timer_properties;
 }
 
@@ -250,6 +253,7 @@ static const TypeInfo xilinx_timer_info = {
     .name          = TYPE_XILINX_TIMER,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(struct timerblock),
+    .instance_init = xilinx_timer_init,
     .class_init    = xilinx_timer_class_init,
 };