add PKG_CPE_ID ids to package and tools

CPE ids helps to tracks CVE in packages.
https://cpe.mitre.org/specification/

Thanks to swalker for CPE to package mapping and
keep tracking CVEs.

Acked-by: Jo-Philipp Wich <jo@mein.io>
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>

package/network/utils/tcpdump/Makefile

@@ -21,6 +21,7 @@ PKG_BUILD_PARALLEL:=1
 
 PKG_MAINTAINER:=Felix Fietkau <nbd@nbd.name>
 PKG_LICENSE:=BSD-3-Clause
+PKG_CPE_ID:=cpe:/a:tcpdump:tcpdump
 
 PKG_INSTALL:=1