package/botan: set BOTAN_CPE_ID_VALID

cpe:2.3:a:botan_project:botan is a valid CPE identifier for this
package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/botan/botan.mk

@@ -9,6 +9,7 @@ BOTAN_SOURCE = Botan-$(BOTAN_VERSION).tar.xz
 BOTAN_SITE = http://botan.randombit.net/releases
 BOTAN_LICENSE = BSD-2-Clause
 BOTAN_LICENSE_FILES = license.txt
+BOTAN_CPE_ID_VALID = YES
 
 BOTAN_INSTALL_STAGING = YES