OvmfPkg/License.txt: refresh the MIT license text and include the SPDX ID

Refresh the MIT license text from <https://spdx.org/licenses/MIT.html>,
and add "SPDX-License-Identifier: MIT" for easier parsing by machines.

This follows the tree-wide adoption of "SPDX-License-Identifier"s, made
for <https://bugzilla.tianocore.org/show_bug.cgi?id=1373>; in particular:

- commit 304bff7223a8 ("edk2: Change License.txt from 2-Clause BSD to
  BSD+Patent", 2019-04-09),

- commit 75fae505b735 ("OvmfPkg: Change License.txt from 2-Clause BSD to
  BSD+Patent", 2019-04-09).

Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Julien Grall <julien.grall@arm.com>
Cc: Lars Kurth <lars.kurth@citrix.com>
Cc: xen-devel@lists.xenproject.org
Bugzilla: https://bugzilla.tianocore.org/show_bug.cgi?id=1654
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>

diff --git a/OvmfPkg/License.txt b/OvmfPkg/License.txt
index a2e02a1796aa20e9cb7b5f965aaae44e371e7d76..6ec950cd9e13d7a2656b5f6ea7fcd2a05f01320e 100644 (file)
--- a/OvmfPkg/License.txt
+++ b/OvmfPkg/License.txt
@@ -57,6 +57,8 @@ are located in:
 - OvmfPkg/Include/IndustryStandard/Xen/\r
 - OvmfPkg/XenBusDxe/\r
 \r
+SPDX-License-Identifier: MIT\r
+\r
 Permission is hereby granted, free of charge, to any person obtaining a copy\r
 of this software and associated documentation files (the "Software"), to deal\r
 in the Software without restriction, including without limitation the rights\r
@@ -64,8 +66,9 @@ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is\r
 furnished to do so, subject to the following conditions:\r
 \r
-The above copyright notice and this permission notice shall be included in\r
-all copies or substantial portions of the Software.\r
+The above copyright notice and this permission notice (including the next\r
+paragraph) shall be included in all copies or substantial portions of the\r
+Software.\r
 \r
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r