package/acl: add ACL_CPE_ID_VENDOR

cpe:2.3:a:acl_project:acl is a valid CPE identifier for this package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/acl/acl.mk

@@ -8,6 +8,7 @@ ACL_VERSION = 2.2.53
 ACL_SITE = http://download.savannah.gnu.org/releases/acl
 ACL_LICENSE = GPL-2.0+ (programs), LGPL-2.1+ (libraries)
 ACL_LICENSE_FILES = doc/COPYING doc/COPYING.LGPL
+ACL_CPE_ID_VENDOR = acl_project
 
 ACL_DEPENDENCIES = attr
 HOST_ACL_DEPENDENCIES = host-attr