hw/display: QOM'ify pl110.c

Drop the old Sysbus init and use instance_init and
DeviceClass::realize instead

Signed-off-by: xiaoqiang zhao <zxq_yx_007@163.com>
Message-id: 20161023091816.3839-5-zxq_yx_007@163.com
[PMM: added accidentally dropped blank line]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/display/pl110.c

@@ -466,17 +466,16 @@ static const GraphicHwOps pl110_gfx_ops = {
     .gfx_update  = pl110_update_display,
 };
 
-static int pl110_initfn(SysBusDevice *sbd)
+static void pl110_realize(DeviceState *dev, Error **errp)
 {
-    DeviceState *dev = DEVICE(sbd);
     PL110State *s = PL110(dev);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
 
     memory_region_init_io(&s->iomem, OBJECT(s), &pl110_ops, s, "pl110", 0x1000);
     sysbus_init_mmio(sbd, &s->iomem);
     sysbus_init_irq(sbd, &s->irq);
     qdev_init_gpio_in(dev, pl110_mux_ctrl_set, 1);
     s->con = graphic_console_init(dev, 0, &pl110_gfx_ops, s);
-    return 0;
 }
 
 static void pl110_init(Object *obj)
@@ -503,11 +502,10 @@ static void pl111_init(Object *obj)
 static void pl110_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
-    SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
 
-    k->init = pl110_initfn;
     set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
     dc->vmsd = &vmstate_pl110;
+    dc->realize = pl110_realize;
 }
 
 static const TypeInfo pl110_info = {