added GPL headers

spi_flash.c

@@ -1,3 +1,21 @@
+/*
+ *
+ * Copyright (C) 2016 Rebane, rebane@alkohol.ee
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
+ * Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
 #include "spi_flash.h"
 #include "rtl8710.h"
 #include "mask.h"