add apache license text

Author: peyo-hd

BoardConfig.mk

@@ -1,3 +1,19 @@
+#
+# Copyright 2020 Android-RPi Project
+#
+# 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
+#
+#      http://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.
+#
+
 TARGET_NO_BOOTLOADER := true
 TARGET_NO_KERNEL := true
 TARGET_NO_RECOVERY := true

rpi3.mk

@@ -1,3 +1,19 @@
+#
+# Copyright 2020 Android-RPi Project
+#
+# 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
+#
+#      http://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_OEM_TV_APP := true
 $(call inherit-product, device/google/atv/products/atv_base.mk)