Relicense Hafnium BUILD.gn under BSD 3 clause license.
This matches the relicensing of the rest of Hafnium.
Change-Id: I4b3924c59691c60f7ebd6ffe3f958635d16e58cd
diff --git a/BUILD.gn b/BUILD.gn
index 5651f72..5210583 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1,16 +1,8 @@
# Copyright 2019 The Hafnium Authors.
#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# https://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# Use of this source code is governed by a BSD-style license that can be found
+# in the LICENSE file of the main Hafnium repository or at
+# https://opensource.org/licenses/BSD-3-Clause.
import("//build/linux/linux.gni")