internal/syscall/unix: apply fstatat fix to linux/mips64le

Apply CL 633280 to linux/mips64le, as it has the same struct as
mips64.

Updates #70659.

Change-Id: Ibab635e69e44682eb214bf6a00f4cd75816b2d34
Reviewed-on: https://go-review.googlesource.com/c/go/+/637739
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

Author: cherrymui

src/internal/syscall/unix/at_fstatat.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build dragonfly || (linux && !(loong64 || mips64)) || netbsd || (openbsd && mips64)
+//go:build dragonfly || (linux && !(loong64 || mips64 || mips64le)) || netbsd || (openbsd && mips64)
 
 package unix
 

src/internal/syscall/unix/at_fstatat2.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build freebsd || (linux && (loong64 || mips64))
+//go:build freebsd || (linux && (loong64 || mips64 || mips64le))
 
 package unix