tools/libxl: usbdevice should imply usb

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
xen-unstable changeset:   21844:ef495616b946
xen-unstable date:        Fri Jul 23 16:58:35 2010 +0100

tools/libxl/libxl.c

@@ -845,7 +845,7 @@ static char ** libxl_build_device_model_args(struct libxl_ctx *ctx,
             flexarray_set(dm_args, num++, "-boot");
             flexarray_set(dm_args, num++, info->boot);
         }
-        if (info->usb) {
+        if (info->usb || info->usbdevice) {
             flexarray_set(dm_args, num++, "-usb");
             if (info->usbdevice) {
                 flexarray_set(dm_args, num++, "-usbdevice");