Update prebuilt Clang to r416183b from Android.

https://android.googlesource.com/platform/prebuilts/clang/host/
linux-x86/+/06a71ddac05c22edb2d10b590e1769b3f8619bef

clang 12.0.5 (based on r416183b) from build 7284624.

Change-Id: I277a316abcf47307562d8b748b84870f31a72866
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/linux-x64/clang/include/llvm/TextAPI/MachO/TextAPIWriter.h b/linux-x64/clang/include/llvm/TextAPI/MachO/TextAPIWriter.h
index 2a45bb8..109ac8e 100644
--- a/linux-x64/clang/include/llvm/TextAPI/MachO/TextAPIWriter.h
+++ b/linux-x64/clang/include/llvm/TextAPI/MachO/TextAPIWriter.h
@@ -9,9 +9,11 @@
 #ifndef LLVM_TEXTAPI_MACHO_WRITER_H
 #define LLVM_TEXTAPI_MACHO_WRITER_H
 
-#include "llvm/Support/MemoryBuffer.h"
-
 namespace llvm {
+
+class Error;
+class raw_ostream;
+
 namespace MachO {
 
 class InterfaceFile;