package/matio: set MATIO_CPE_ID_VALID

cpe:2.3:a:matio_project:matio is a valid CPE identifier for this
package:

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

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

package/matio/matio.mk

@@ -8,6 +8,7 @@ MATIO_VERSION = 1.5.18
 MATIO_SITE = http://downloads.sourceforge.net/project/matio/matio/$(MATIO_VERSION)
 MATIO_LICENSE = BSD-2-Clause
 MATIO_LICENSE_FILES = COPYING
+MATIO_CPE_ID_VALID = YES
 MATIO_DEPENDENCIES = zlib
 MATIO_INSTALL_STAGING = YES