package/heirloom-mailx: add CPE variables

cpe:2.3:a:heirloom:mailx is a valid CPE identifier for this package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 3cc45ca6539fd28b18fe820432d3c580ec2bac8d)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/heirloom-mailx/heirloom-mailx.mk

@@ -9,6 +9,8 @@ HEIRLOOM_MAILX_SOURCE = heirloom-mailx_$(HEIRLOOM_MAILX_VERSION).orig.tar.gz
 HEIRLOOM_MAILX_SITE = http://snapshot.debian.org/archive/debian/20141023T043132Z/pool/main/h/heirloom-mailx
 HEIRLOOM_MAILX_LICENSE = BSD-4-Clause, Bellcore (base64), OpenVision (imap_gssapi), RSA Data Security (md5), Network Working Group (hmac), MPL-1.1 (nss)
 HEIRLOOM_MAILX_LICENSE_FILES = COPYING
+HEIRLOOM_MAILX_CPE_ID_VENDOR = heirloom
+HEIRLOOM_MAILX_CPE_ID_PRODUCT = mailx
 
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 HEIRLOOM_MAILX_DEPENDENCIES += openssl