gRPC migration

Change-Id: I3129ae27d7ee12a23c7046f0d877e8064f2fd7f4
diff --git a/vendor/golang.org/x/sys/unix/gccgo_linux_amd64.go b/vendor/golang.org/x/sys/unix/gccgo_linux_amd64.go
index 251a977..e60e49a 100644
--- a/vendor/golang.org/x/sys/unix/gccgo_linux_amd64.go
+++ b/vendor/golang.org/x/sys/unix/gccgo_linux_amd64.go
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build gccgo && linux && amd64
 // +build gccgo,linux,amd64
 
 package unix