package/gutenprint: add GUTENPRINT_CPE_ID_VENDOR

cpe:2.3:a:gutenprint_project:gutenprint is a valid CPE identifier for
this package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 9462869f271ddb4cfd7a19a59a082fc2f4a6f6d5)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gutenprint/gutenprint.mk

@@ -10,6 +10,7 @@ GUTENPRINT_SITE = http://downloads.sourceforge.net/project/gimp-print/gutenprint
 GUTENPRINT_SOURCE = gutenprint-$(GUTENPRINT_VERSION).tar.bz2
 GUTENPRINT_LICENSE = GPL-2.0+
 GUTENPRINT_LICENSE_FILES = COPYING
+GUTENPRINT_CPE_ID_VENDOR = gutenprint_project
 
 # Needed, as we touch Makefile.am
 GUTENPRINT_AUTORECONF = YES