package/weston: add WESTON_CPE_ID_VENDOR

cpe:2.3:a:wayland:weston is a valid CPE identifier for this package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit bbfc6f546e36a2404786055ffbce41d2cdfc393a)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/weston/weston.mk

@@ -9,6 +9,7 @@ WESTON_SITE = https://wayland.freedesktop.org/releases
 WESTON_SOURCE = weston-$(WESTON_VERSION).tar.xz
 WESTON_LICENSE = MIT
 WESTON_LICENSE_FILES = COPYING
+WESTON_CPE_ID_VENDOR = wayland
 
 WESTON_DEPENDENCIES = host-pkgconf wayland wayland-protocols \
 	libxkbcommon pixman libpng jpeg udev cairo libinput libdrm