package/zeromq: add CPE variables

cpe:2.3:a:zeromq:libzmq is a valid CPE identifier for this package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/zeromq/zeromq.mk

@@ -11,6 +11,8 @@ ZEROMQ_DEPENDENCIES = util-linux
 ZEROMQ_CONF_OPTS = --disable-Werror --without-documentation
 ZEROMQ_LICENSE = LGPL-3.0+ with exceptions
 ZEROMQ_LICENSE_FILES = COPYING COPYING.LESSER
+ZEROMQ_CPE_ID_VENDOR = zeromq
+ZEROMQ_CPE_ID_PRODUCT = libzmq
 
 # Assume these flags are always available. It is true, at least for
 # SOCK_CLOEXEC, since linux v2.6.27.