package/netcat: set NETCAT_CPE_ID_VALID

cpe:2.3:a:netcat_project:netcat is indeed the right CPE identifier for
this package, as can be seen from:

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

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

package/netcat/netcat.mk

@@ -8,5 +8,6 @@ NETCAT_VERSION = 0.7.1
 NETCAT_SITE = http://downloads.sourceforge.net/project/netcat/netcat/$(NETCAT_VERSION)
 NETCAT_LICENSE = GPL-2.0+
 NETCAT_LICENSE_FILES = COPYING
+NETCAT_CPE_ID_VALID = YES
 
 $(eval $(autotools-package))