[XEN PATCH for-4.17 1/4] xen: Add licence information to public/errno.h

[Anthony PERARD]

Fixes: 81f559e97974 ("make error codes a formal part of the ABI")
Reported-by: Andrew Cooper <andrew.coop...@citrix.com>
Signed-off-by: Anthony PERARD <anthony.per...@citrix.com>
---
 xen/include/public/errno.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/xen/include/public/errno.h b/xen/include/public/errno.h
index 5c53af6af9..6bdc8c5079 100644
--- a/xen/include/public/errno.h
+++ b/xen/include/public/errno.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: MIT */
+
 /*
  * There are two expected ways of including this header.
  *
-- 
Anthony PERARD