package/rtl_433: add RTL_433_CPE_ID_VENDOR

cpe:2.3:a:rtl_433_project:rtl_433 is a valid CPE identifier for this
package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Artl_433_project%3Artl_433

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

package/rtl_433/rtl_433.mk

@@ -8,6 +8,7 @@ RTL_433_VERSION = 21.12
 RTL_433_SITE = $(call github,merbanan,rtl_433,$(RTL_433_VERSION))
 RTL_433_LICENSE = GPL-2.0+
 RTL_433_LICENSE_FILES = COPYING
+RTL_433_CPE_ID_VENDOR = rtl_433_project
 
 # Force Release build to remove ASAN.
 RTL_433_CONF_OPTS = \