isa: pic: convert to QEMU Object Model

This converts two devices at once because PIC subclasses ISA and converting
subclasses independently is extremely hard.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/hw/ne2000-isa.c b/hw/ne2000-isa.c
index 5bc5f2a..25a7a31 100644
--- a/hw/ne2000-isa.c
+++ b/hw/ne2000-isa.c
@@ -82,11 +82,17 @@
     return 0;
 }
 
-static ISADeviceInfo ne2000_isa_info = {
-    .qdev.name  = "ne2k_isa",
-    .qdev.size  = sizeof(ISANE2000State),
-    .init       = isa_ne2000_initfn,
-    .qdev.props = (Property[]) {
+static void isa_ne2000_class_initfn(ObjectClass *klass, void *data)
+{
+    ISADeviceClass *ic = ISA_DEVICE_CLASS(klass);
+    ic->init = isa_ne2000_initfn;
+}
+
+static DeviceInfo ne2000_isa_info = {
+    .name  = "ne2k_isa",
+    .size  = sizeof(ISANE2000State),
+    .class_init       = isa_ne2000_class_initfn,
+    .props = (Property[]) {
         DEFINE_PROP_HEX32("iobase", ISANE2000State, iobase, 0x300),
         DEFINE_PROP_UINT32("irq",   ISANE2000State, isairq, 9),
         DEFINE_NIC_PROPERTIES(ISANE2000State, ne2000.c),