xen-pt doesn't set the is_express field, but is supposed to be
able to handle PCI Express devices too.  Mark it as hybrid.

Suggested-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 hw/xen/xen_pt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/xen/xen_pt.c b/hw/xen/xen_pt.c
index 01df3414d3..9bba717708 100644
--- a/hw/xen/xen_pt.c
+++ b/hw/xen/xen_pt.c
@@ -966,6 +966,7 @@ static const TypeInfo xen_pci_passthrough_info = {
     .class_init = xen_pci_passthrough_class_init,
     .interfaces = (InterfaceInfo[]) {
         { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+        { INTERFACE_PCIE_DEVICE },
         { },
     },
 };
-- 
2.13.6