xend: Supply pass-through vslot to qemu-dm

Signed-off-by: Simon Horman <horms@verge.net.au>

tools/python/xen/xend/server/pciif.py

@@ -90,6 +90,7 @@ class PciController(DevController):
             back['dev-%i' % pcidevid] = "%04x:%02x:%02x.%01x" % \
                                         (domain, bus, slot, func)
             back['uuid-%i' % pcidevid] = pci_config.get('uuid', '')
+            back['vslot-%i' % pcidevid] = "%02x" % vslot
             pcidevid += 1
 
         if vslots != "":