scripts: add copyright notices

Change-Id: I2237d63de5c9beb8355b3c6c9a3816b16a0d5fe1
diff --git a/kgdb.sh b/kgdb.sh
index b3a745a..7ea4bdb 100755
--- a/kgdb.sh
+++ b/kgdb.sh
@@ -1,4 +1,18 @@
-#! /bin/bash
+#!/bin/bash
+#
+# Copyright 2022 Google LLC
+#
+# 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.
 
 # Launch gdb talking to a simulator or similar at localhost:3333
 #