package/shadowsocks-libev: add SHADOWSOCKS_LIBEV_CPE_ID_VENDOR

cpe:2.3:a:shadowsocks:shadowsocks-libev is a valid CPE identifier for
this package:

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

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

package/shadowsocks-libev/shadowsocks-libev.mk

@@ -8,6 +8,7 @@ SHADOWSOCKS_LIBEV_VERSION = 3.3.5
 SHADOWSOCKS_LIBEV_SITE = https://github.com/shadowsocks/shadowsocks-libev/releases/download/v$(SHADOWSOCKS_LIBEV_VERSION)
 SHADOWSOCKS_LIBEV_LICENSE = GPL-3.0+, BSD-2-Clause (libbloom), BSD-3-Clause (libcork, libipset)
 SHADOWSOCKS_LIBEV_LICENSE_FILES = COPYING libbloom/LICENSE libcork/COPYING
+SHADOWSOCKS_LIBEV_CPE_ID_VENDOR = shadowsocks
 SHADOWSOCKS_LIBEV_DEPENDENCIES = host-pkgconf c-ares libev libsodium mbedtls pcre
 SHADOWSOCKS_LIBEV_INSTALL_STAGING = YES
 # We're patching configure.ac