package/squashfs: set SQUASHFS_CPE_ID_VALID

cpe:2.3:a:squashfs_project:squashfs is a valid CPE identifier for this
package:

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

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

package/squashfs/squashfs.mk

@@ -8,6 +8,7 @@ SQUASHFS_VERSION = 4.4
 SQUASHFS_SITE = $(call github,plougher,squashfs-tools,$(SQUASHFS_VERSION))
 SQUASHFS_LICENSE = GPL-2.0+
 SQUASHFS_LICENSE_FILES = COPYING
+SQUASHFS_CPE_ID_VALID = YES
 SQUASHFS_MAKE_ARGS = XATTR_SUPPORT=1
 
 ifeq ($(BR2_PACKAGE_SQUASHFS_LZ4),y)