aiccu: Add PKG_LICENSE information

Signed-off-by: Ian Leonard <antonlacon@gmail.com>

ipv6/aiccu/Makefile

@@ -14,6 +14,8 @@ PKG_RELEASE:=11
 PKG_SOURCE:=$(PKG_NAME)_$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.sixxs.net/archive/sixxs/aiccu/unix
 PKG_MD5SUM:=c9bcc83644ed788e22a7c3f3d4021350
+PKG_LICENSE:=BSD-3-Clause
+PKG_LICENSE_FILES:=doc/LICENSE
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)