Updating to latest protos and device-management interface, releasing 2.0

Change-Id: I2d2ebf5b305d6d06b8d01c49d4d67e7ff050f5d4
diff --git a/vendor/golang.org/x/sys/unix/syscall_unix_gc_ppc64x.go b/vendor/golang.org/x/sys/unix/syscall_unix_gc_ppc64x.go
index 86dc765..f6f707a 100644
--- a/vendor/golang.org/x/sys/unix/syscall_unix_gc_ppc64x.go
+++ b/vendor/golang.org/x/sys/unix/syscall_unix_gc_ppc64x.go
@@ -2,9 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build linux && (ppc64le || ppc64) && gc
 // +build linux
 // +build ppc64le ppc64
-// +build !gccgo
+// +build gc
 
 package unix