package/libseccomp: set LIBSECCOMP_CPE_ID_VALID

cpe:2.3:a:libseccomp_project:libseccomp is a valid CPE identifier for
this package:

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

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

package/libseccomp/libseccomp.mk

@@ -8,6 +8,7 @@ LIBSECCOMP_VERSION = 2.4.4
 LIBSECCOMP_SITE = https://github.com/seccomp/libseccomp/releases/download/v$(LIBSECCOMP_VERSION)
 LIBSECCOMP_LICENSE = LGPL-2.1
 LIBSECCOMP_LICENSE_FILES = LICENSE
+LIBSECCOMP_CPE_ID_VALID = YES
 LIBSECCOMP_INSTALL_STAGING = YES
 
 $(eval $(autotools-package))