Update prebuilt Clang to match Android kernel.

Bug: 132428451
Change-Id: I8f6e2cb23f381fc0c02ddea99b867e58e925e5be
diff --git a/linux-x64/clang/include/llvm/LTO/Config.h b/linux-x64/clang/include/llvm/LTO/Config.h
index 57bba5e..f0e1b1d 100644
--- a/linux-x64/clang/include/llvm/LTO/Config.h
+++ b/linux-x64/clang/include/llvm/LTO/Config.h
@@ -1,9 +1,8 @@
 //===-Config.h - LLVM Link Time Optimizer Configuration -------------------===//
 //
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 //
@@ -49,6 +48,10 @@
   /// Use the new pass manager
   bool UseNewPM = false;
 
+  /// Flag to indicate that the optimizer should not assume builtins are present
+  /// on the target.
+  bool Freestanding = false;
+
   /// Disable entirely the optimizer, including importing for ThinLTO
   bool CodeGenOnly = false;
 
@@ -73,6 +76,9 @@
   /// Sample PGO profile path.
   std::string SampleProfile;
 
+  /// Name remapping file for profile data.
+  std::string ProfileRemapping;
+
   /// The directory to store .dwo files.
   std::string DwoDir;