libxl: PVH guests use PV nics

Remove device model "none" support from the nic functions.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>

tools/libxl/libxl_nic.c

@@ -92,18 +92,17 @@ static int libxl__device_nic_setdefault(libxl__gc *gc, uint32_t domid,
     switch (libxl__domain_type(gc, domid)) {
     case LIBXL_DOMAIN_TYPE_HVM:
         if (!nic->nictype) {
-            if (hotplug ||
-                (libxl__device_model_version_running(gc, domid) ==
-                 LIBXL_DEVICE_MODEL_VERSION_NONE))
+            if (hotplug)
                 nic->nictype = LIBXL_NIC_TYPE_VIF;
             else
                 nic->nictype = LIBXL_NIC_TYPE_VIF_IOEMU;
         }
         break;
+    case LIBXL_DOMAIN_TYPE_PVH:
     case LIBXL_DOMAIN_TYPE_PV:
         if (nic->nictype == LIBXL_NIC_TYPE_VIF_IOEMU) {
             LOGD(ERROR, domid,
-                 "trying to create PV guest with an emulated interface");
+            "trying to create PV or PVH guest with an emulated interface");
             return ERROR_INVAL;
         }
         nic->nictype = LIBXL_NIC_TYPE_VIF;