[gjs: 6/18] maint: Add MIT license to clang-format hooks

[Philip Chimento <pchimento src gnome org>]

commit d74a189ad0967e5f72fcf1f3a2dcb327686a5436
Author: Philip Chimento <philip chimento gmail com>
Date:   Sat Sep 5 20:59:53 2020 -0700

    maint: Add MIT license to clang-format hooks
    
    Ref: https://github.com/barisione/clang-format-hooks/blob/master/COPYING

 tools/apply-format          | 1 +
 tools/git-pre-commit-format | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/tools/apply-format b/tools/apply-format
index 55a80861..6e3af630 100755
--- a/tools/apply-format
+++ b/tools/apply-format
@@ -1,5 +1,6 @@
 #! /bin/bash
 #
+# SPDX-License-Identifier: MIT
 # SPDX-FileCopyrightText: 2018 Undo Ltd.
 #
 # https://github.com/barisione/clang-format-hooks
diff --git a/tools/git-pre-commit-format b/tools/git-pre-commit-format
index 997e2a73..fb1acd6d 100755
--- a/tools/git-pre-commit-format
+++ b/tools/git-pre-commit-format
@@ -1,5 +1,6 @@
 #! /bin/bash
 #
+# SPDX-License-Identifier: MIT
 # SPDX-FileCopyrightText: 2018 Undo Ltd.
 #
 # https://github.com/barisione/clang-format-hooks