package/v4l2loopback: add V4L2LOOPBACK_CPE_ID_VENDOR

cpe:2.3:o:v4l2loopback_project:v4l2loopback is a valid CPE identifier
for this package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Ao%3Av4l2loopback_project%3Av4l2loopback

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit 1edb9d691dec2ad248ce62e30034fded52a77d64)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/v4l2loopback/v4l2loopback.mk

@@ -8,6 +8,8 @@ V4L2LOOPBACK_VERSION = 0.12.5
 V4L2LOOPBACK_SITE = $(call github,umlaeute,v4l2loopback,v$(V4L2LOOPBACK_VERSION))
 V4L2LOOPBACK_LICENSE = GPL-2.0+
 V4L2LOOPBACK_LICENSE_FILES = COPYING
+V4L2LOOPBACK_CPE_ID_VENDOR = v4l2loopback_project
+V4L2LOOPBACK_CPE_ID_PREFIX = cpe:2.3:o
 
 ifeq ($(BR2_PACKAGE_V4L2LOOPBACK_UTILS),y)
 define V4L2LOOPBACK_INSTALL_TARGET_CMDS