[VOL-4293] OpenONU Adapter update for gRPC migration

Change-Id: I05300d3b95b878f44576a99a05f53f52fdc0cda1
diff --git a/vendor/golang.org/x/sys/unix/gccgo.go b/vendor/golang.org/x/sys/unix/gccgo.go
index 86032c1..0dee232 100644
--- a/vendor/golang.org/x/sys/unix/gccgo.go
+++ b/vendor/golang.org/x/sys/unix/gccgo.go
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build gccgo
-// +build !aix
+//go:build gccgo && !aix
+// +build gccgo,!aix
 
 package unix