Merge pull request #1162 from AlaeddineWeslati/master

added missing Licence in at86rf231 driver files.

drivers/at86rf231/at86rf231_rx.c

+/*
+ * Copyright (C) 2014 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
 
 #include "at86rf231.h"
 #include "at86rf231_arch.h"

drivers/at86rf231/at86rf231_spi.c

+/*
+ * Copyright (C) 2014 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
 #include "at86rf231_spi.h"
 #include "at86rf231_arch.h"
 #include "at86rf231.h"

drivers/at86rf231/at86rf231_tx.c

+/*
+ * Copyright (C) 2014 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
 #include "at86rf231.h"
 #include "at86rf231_arch.h"
 #include "at86rf231_spi.h"