docs(license): rectify `arm-gic.h` license

The `arm-gic.h` file distributed by the Linux kernel is disjunctively
dual-licensed under the GPL-2.0 or MIT licenses, but the BSD-3-Clause
license has been applied in violation of the requirements of both
licenses. This change ensures the file is correctly licensed under the
terms of the MIT license, and that we comply with it by distributing a
copy of the license text.

Change-Id: Ie90066753a5eb8c0e2fc95ba43e3f5bcbe2fa459
Signed-off-by: Chris Kay <chris.kay@arm.com>

docs/license.rst

@@ -76,5 +76,14 @@ license text is included in those source files.
    BSD-3-Clause license. Any contributions to this code must be made under the
    terms of both licenses.
 
+-  Some source files originating from the Linux source tree, which are
+   disjunctively dual licensed (GPL-2.0 OR MIT), are redistributed under the
+   terms of the MIT license. These files are:
+
+   -  ``include/dt-bindings/interrupt-controller/arm-gic.h``
+
+   See the original `Linux MIT license`_.
+
 .. _FreeBSD: http://www.freebsd.org
+.. _Linux MIT license: https://raw.githubusercontent.com/torvalds/linux/master/LICENSES/preferred/MIT
 .. _SCC: http://www.simple-cc.org/

include/dt-bindings/interrupt-controller/arm-gic.h

@@ -1,4 +1,5 @@
-/* SPDX-License-Identifier: GPL-2.0 or BSD-3-Clause */
+/* SPDX-License-Identifier: MIT */
+
 /*
  * This header provides constants for the ARM GIC.
  */

licenses/LICENSE.MIT

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) [year] [fullname]
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.