libion: add apache license header to ion_test.c

Change-Id: Ie4b641cd62b56f713178932cc5c08083c0d2452a

libion/ion_test.c

@@ -1,3 +1,19 @@
+/*
+ *   Copyright 2013 Google, Inc
+ *
+ *  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.
+ */
+
 #include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>