package/tiff: add CPE variables

cpe:2.3:a:libtiff:libtiff is a valid CPE identifier for this package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Alibtiff%3Alibtiff

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/tiff/tiff.mk

@@ -8,6 +8,8 @@ TIFF_VERSION = 4.2.0
 TIFF_SITE = http://download.osgeo.org/libtiff
 TIFF_LICENSE = tiff license
 TIFF_LICENSE_FILES = COPYRIGHT
+TIFF_CPE_ID_VENDOR = libtiff
+TIFF_CPE_ID_PRODUCT = libtiff
 TIFF_INSTALL_STAGING = YES
 TIFF_CONF_OPTS = \
 	--disable-cxx \