tiff: set CVE NAME

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-multimedia/libtiff/tiff_4.0.6.bb

@@ -2,6 +2,8 @@ SUMMARY = "Provides support for the Tag Image File Format (TIFF)"
 LICENSE = "BSD-2-Clause"
 LIC_FILES_CHKSUM = "file://COPYRIGHT;md5=34da3db46fab7501992f9615d7e158cf"
 
+CVE_NAME = "libtiff"
+
 SRC_URI = "http://download.osgeo.org/libtiff/tiff-${PV}.tar.gz \
            file://libtool2.patch \
            file://CVE-2015-8665_8683.patch \