package/freetype: add FREETYPE_CPE_ID_VENDOR

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

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

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

package/freetype/freetype.mk

@@ -11,6 +11,7 @@ FREETYPE_INSTALL_STAGING = YES
 FREETYPE_MAKE_OPTS = CCexe="$(HOSTCC)"
 FREETYPE_LICENSE = Dual FTL/GPL-2.0+
 FREETYPE_LICENSE_FILES = docs/LICENSE.TXT docs/FTL.TXT docs/GPLv2.TXT
+FREETYPE_CPE_ID_VENDOR = freetype
 FREETYPE_DEPENDENCIES = host-pkgconf
 FREETYPE_CONFIG_SCRIPTS = freetype-config