[PATCH-for-9.0 v2 16/19] hw/xen/xen_pt: Add missing license

[Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>]

Commit eaab4d60d3 ("Introduce Xen PCI Passthrough, qdevice")
introduced both xen_pt.[ch], but only added the license to
xen_pt.c. Use the same license for xen_pt.h.

Suggested-by: David Woodhouse <dwmw@xxxxxxxxxxxx>
Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
---
 hw/xen/xen_pt.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/hw/xen/xen_pt.h b/hw/xen/xen_pt.h
index 31bcfdf705..d3180bb134 100644
--- a/hw/xen/xen_pt.h
+++ b/hw/xen/xen_pt.h
@@ -1,3 +1,13 @@
+/*
+ * Copyright (c) 2007, Neocleus Corporation.
+ * Copyright (c) 2007, Intel Corporation.
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Alex Novik <alex@xxxxxxxxxxxx>
+ * Allen Kay <allen.m.kay@xxxxxxxxx>
+ * Guy Zana <guy@xxxxxxxxxxxx>
+ */
 #ifndef XEN_PT_H
 #define XEN_PT_H
 
-- 
2.41.0