package/transmission: add TRANSMISSION_CPE_ID_VENDOR

cpe:2.3:a:transmissionbt:transmission is a valid CPE identifier for this
package:

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

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
diff --git a/package/transmission/transmission.mk b/package/transmission/transmission.mk
index ff3b41c..1660d2c 100644
--- a/package/transmission/transmission.mk
+++ b/package/transmission/transmission.mk
@@ -20,6 +20,7 @@
 	--enable-lightweight
 TRANSMISSION_LICENSE = GPL-2.0 or GPL-3.0 with OpenSSL exception
 TRANSMISSION_LICENSE_FILES = COPYING
+TRANSMISSION_CPE_ID_VENDOR = transmissionbt
 
 ifeq ($(BR2_PACKAGE_LIBMINIUPNPC),y)
 TRANSMISSION_DEPENDENCIES += libminiupnpc