package/libiec61850: add LIBIEC61850_CPE_ID_VENDOR

cpe:2.3:a:mz-automation:libiec61850 is a valid CPE identifier for this
package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Amz-automation%3Alibiec61850

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/libiec61850/libiec61850.mk

@@ -9,6 +9,7 @@ LIBIEC61850_SITE = $(call github,mz-automation,libiec61850,v$(LIBIEC61850_VERSIO
 LIBIEC61850_INSTALL_STAGING = YES
 LIBIEC61850_LICENSE = GPL-3.0+
 LIBIEC61850_LICENSE_FILES = COPYING
+LIBIEC61850_CPE_ID_VENDOR = mz-automation
 LIBIEC61850_CONF_OPTS = -DBUILD_PYTHON_BINDINGS=OFF
 
 # 0003-COTP-fixed-possible-heap-buffer-overflow-when-handling-message.patch