LICENSE: add license for apps/wireless/wapi

add the license for apps/wireless/wapi

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>

LICENSE

@@ -587,4 +587,37 @@ apps/canutils/libcanutils
 
     Send feedback to <linux-can@vger.kernel.org>
 
+apps/wireless/wapi
+==================
+
+      Copyright (C) 2011, 2017 Gregory Nutt. All rights reserved.
+      Author: Gregory Nutt <gnutt@nuttx.org>
+
+    Adapted for NuttX from WAPI:
+
+      Copyright (c) 2010, Volkan YAZICI <volkan.yazici@gmail.com>
+      All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+     - Redistributions of  source code must  retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+
+     - Redistributions in binary form must reproduce the above copyright
+       notice, this list of  conditions and the  following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+    IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+    THE IMPLIED WARRANTIES OF MERCHANTABILITY AND  FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+    CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+    EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+    LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+    NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.