package/openntpd: add OPENNTPD_CPE_ID_VENDOR

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

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

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

package/openntpd/openntpd.mk

@@ -8,6 +8,7 @@ OPENNTPD_VERSION = 6.2p3
 OPENNTPD_SITE = http://ftp.openbsd.org/pub/OpenBSD/OpenNTPD
 OPENNTPD_LICENSE = MIT-like, BSD-2-Clause, BSD-3-Clause
 OPENNTPD_LICENSE_FILES = COPYING
+OPENNTPD_CPE_ID_VENDOR = openntpd
 OPENNTPD_DEPENDENCIES = host-bison
 # Need to autoreconf for our libtool patch to apply properly
 OPENNTPD_AUTORECONF = YES