Update prebuilt Clang to match Android kernel.

Bug: 132428451
Change-Id: I8f6e2cb23f381fc0c02ddea99b867e58e925e5be
diff --git a/linux-x64/clang/include/llvm/Bitcode/BitcodeReader.h b/linux-x64/clang/include/llvm/Bitcode/BitcodeReader.h
index ce8bdd9..3e8e7ed 100644
--- a/linux-x64/clang/include/llvm/Bitcode/BitcodeReader.h
+++ b/linux-x64/clang/include/llvm/Bitcode/BitcodeReader.h
@@ -1,9 +1,8 @@
 //===- llvm/Bitcode/BitcodeReader.h - Bitcode reader ------------*- C++ -*-===//
 //
-//                     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
 //
 //===----------------------------------------------------------------------===//
 //
@@ -51,6 +50,7 @@
   struct BitcodeLTOInfo {
     bool IsThinLTO;
     bool HasSummary;
+    bool EnableSplitLTOUnit;
   };
 
   /// Represents a module in a bitcode file.