hw/9pfs: Add qdev.reset callback for virtio-9p-pci device

Add the device reset callback

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
diff --git a/hw/9pfs/virtio-9p-device.c b/hw/9pfs/virtio-9p-device.c
index c9bca8b..cd343e1 100644
--- a/hw/9pfs/virtio-9p-device.c
+++ b/hw/9pfs/virtio-9p-device.c
@@ -176,7 +176,8 @@
         DEFINE_PROP_STRING("mount_tag", VirtIOPCIProxy, fsconf.tag),
         DEFINE_PROP_STRING("fsdev", VirtIOPCIProxy, fsconf.fsdev_id),
         DEFINE_PROP_END_OF_LIST(),
-    }
+    },
+    .qdev.reset = virtio_pci_reset,
 };
 
 static void virtio_9p_register_devices(void)
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 64c6a94..c665f5c 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -266,7 +266,7 @@
     proxy->ioeventfd_started = false;
 }
 
-static void virtio_pci_reset(DeviceState *d)
+void virtio_pci_reset(DeviceState *d)
 {
     VirtIOPCIProxy *proxy = container_of(d, VirtIOPCIProxy, pci_dev.qdev);
     virtio_pci_stop_ioeventfd(proxy);
diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h
index f8404de..344c22b 100644
--- a/hw/virtio-pci.h
+++ b/hw/virtio-pci.h
@@ -45,6 +45,7 @@
 } VirtIOPCIProxy;
 
 void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
+void virtio_pci_reset(DeviceState *d);
 
 /* Virtio ABI version, if we increment this, we break the guest driver. */
 #define VIRTIO_PCI_ABI_VERSION          0