package/at-spi2-atk: add AT_SPI2_ATK_CPE_ID_VENDOR

cpe:2.3:a:gnome:at-spi2-atk is a valid CPE identifier for this package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Agnome%3Aat-spi2-atk

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

package/at-spi2-atk/at-spi2-atk.mk

@@ -11,6 +11,7 @@ AT_SPI2_ATK_SITE = \
 	http://ftp.gnome.org/pub/gnome/sources/at-spi2-atk/$(AT_SPI2_ATK_VERSION_MAJOR)
 AT_SPI2_ATK_LICENSE = LGPL-2.1+
 AT_SPI2_ATK_LICENSE_FILES = COPYING
+AT_SPI2_ATK_CPE_ID_VENDOR = gnome
 AT_SPI2_ATK_INSTALL_STAGING = YES
 AT_SPI2_ATK_DEPENDENCIES = atk at-spi2-core libglib2 host-pkgconf
 AT_SPI2_ATK_CONF_OPTS = -Dtests=false