x86-iommu: use DeviceClass properties

No reason to keep tens of lines if we can do it actually far shorter.
Signed-off-by: NPeter Xu <peterx@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: NJason Wang <jasowang@redhat.com>

hw/i386/x86-iommu.c

@@ -88,55 +88,22 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp)
     x86_iommu_set_default(X86_IOMMU_DEVICE(dev));
 }
 
+static Property x86_iommu_properties[] = {
+    DEFINE_PROP_BOOL("intremap", X86IOMMUState, intr_supported, false),
+    DEFINE_PROP_BOOL("device-iotlb", X86IOMMUState, dt_supported, false),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void x86_iommu_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     dc->realize = x86_iommu_realize;
-}
-
-static bool x86_iommu_intremap_prop_get(Object *o, Error **errp)
-{
-    X86IOMMUState *s = X86_IOMMU_DEVICE(o);
-    return s->intr_supported;
-}
-
-static void x86_iommu_intremap_prop_set(Object *o, bool value, Error **errp)
-{
-    X86IOMMUState *s = X86_IOMMU_DEVICE(o);
-    s->intr_supported = value;
-}
-
-static bool x86_iommu_device_iotlb_prop_get(Object *o, Error **errp)
-{
-    X86IOMMUState *s = X86_IOMMU_DEVICE(o);
-    return s->dt_supported;
-}
-
-static void x86_iommu_device_iotlb_prop_set(Object *o, bool value, Error **errp)
-{
-    X86IOMMUState *s = X86_IOMMU_DEVICE(o);
-    s->dt_supported = value;
-}
-
-static void x86_iommu_instance_init(Object *o)
-{
-    X86IOMMUState *s = X86_IOMMU_DEVICE(o);
-
-    /* By default, do not support IR */
-    s->intr_supported = false;
-    object_property_add_bool(o, "intremap", x86_iommu_intremap_prop_get,
-                             x86_iommu_intremap_prop_set, NULL);
-    s->dt_supported = false;
-    object_property_add_bool(o, "device-iotlb",
-                             x86_iommu_device_iotlb_prop_get,
-                             x86_iommu_device_iotlb_prop_set,
-                             NULL);
+    dc->props = x86_iommu_properties;
 }
 
 static const TypeInfo x86_iommu_info = {
     .name          = TYPE_X86_IOMMU_DEVICE,
     .parent        = TYPE_SYS_BUS_DEVICE,
-    .instance_init = x86_iommu_instance_init,
     .instance_size = sizeof(X86IOMMUState),
     .class_init    = x86_iommu_class_init,
     .class_size    = sizeof(X86IOMMUClass),