package/libvncserver: set LIBVNCSERVER_CPE_ID_VALID

cpe:2.3:a:libvncserver_project:libvncserver is a valid CPE identifier
for this package:

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

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

package/libvncserver/libvncserver.mk

@@ -9,6 +9,7 @@ LIBVNCSERVER_SOURCE = LibVNCServer-$(LIBVNCSERVER_VERSION).tar.gz
 LIBVNCSERVER_SITE = https://github.com/LibVNC/libvncserver/archive
 LIBVNCSERVER_LICENSE = GPL-2.0+
 LIBVNCSERVER_LICENSE_FILES = COPYING
+LIBVNCSERVER_CPE_ID_VALID = YES
 LIBVNCSERVER_INSTALL_STAGING = YES
 LIBVNCSERVER_DEPENDENCIES = host-pkgconf lzo
 LIBVNCSERVER_CONF_OPTS = -DWITH_LZO=ON