Code changes for adding NONE as subcategory

Change-Id: Id2e239056f5be7fd33941fb76e8cfd6a30a2e162
diff --git a/vendor/modules.txt b/vendor/modules.txt
index f5769bf..62a2d00 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -104,7 +104,7 @@
 github.com/modern-go/concurrent
 # github.com/modern-go/reflect2 v1.0.1
 github.com/modern-go/reflect2
-# github.com/opencord/voltha-protos/v4 v4.0.8
+# github.com/opencord/voltha-protos/v4 v4.0.12
 github.com/opencord/voltha-protos/v4/go/common
 github.com/opencord/voltha-protos/v4/go/ext/config
 github.com/opencord/voltha-protos/v4/go/extension