TUN-6937: Bump golang.org/x/* packages to new release tags

vendor/golang.org/x/sys/cpu/cpu_arm64.go

@@ -6,7 +6,10 @@ package cpu
 
 import "runtime"
 
-const cacheLineSize = 64
+// cacheLineSize is used to prevent false sharing of cache lines.
+// We choose 128 because Apple Silicon, a.k.a. M1, has 128-byte cache line size.
+// It doesn't cost much and is much more future-proof.
+const cacheLineSize = 128
 
 func initOptions() {
 	options = []option{

vendor/golang.org/x/sys/cpu/cpu_other_ppc64x.go

@@ -0,0 +1,15 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build !aix && !linux && (ppc64 || ppc64le)
+// +build !aix
+// +build !linux
+// +build ppc64 ppc64le
+
+package cpu
+
+func archInit() {
+	PPC64.IsPOWER8 = true
+	Initialized = true
+}