hw/mips/gt64xxx_pci: Convert gt64120_reset() function into Device reset method

Convert the gt64120_reset() function into a proper Device reset method.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20181002212522.23303-8-f4bug@amsat.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
diff --git a/hw/mips/gt64xxx_pci.c b/hw/mips/gt64xxx_pci.c
index 24ad0ad..dcd1a66 100644
--- a/hw/mips/gt64xxx_pci.c
+++ b/hw/mips/gt64xxx_pci.c
@@ -992,9 +992,9 @@
 }
 
 
-static void gt64120_reset(void *opaque)
+static void gt64120_reset(DeviceState *dev)
 {
-    GT64120State *s = opaque;
+    GT64120State *s = GT64120_PCI_HOST_BRIDGE(dev);
 
     /* FIXME: Malta specific hw assumptions ahead */
 
@@ -1184,16 +1184,6 @@
     return phb->bus;
 }
 
-static int gt64120_init(SysBusDevice *dev)
-{
-    GT64120State *s;
-
-    s = GT64120_PCI_HOST_BRIDGE(dev);
-
-    qemu_register_reset(gt64120_reset, s);
-    return 0;
-}
-
 static void gt64120_pci_realize(PCIDevice *d, Error **errp)
 {
     /* FIXME: Malta specific hw assumptions ahead */
@@ -1241,9 +1231,8 @@
 static void gt64120_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
-    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
 
-    sdc->init = gt64120_init;
+    dc->reset = gt64120_reset;
     dc->vmsd = &vmstate_gt64120;
 }