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/clang-c/CXCompilationDatabase.h b/linux-x64/clang/include/clang-c/CXCompilationDatabase.h
index 2669c1a..2b336e5 100644
--- a/linux-x64/clang/include/clang-c/CXCompilationDatabase.h
+++ b/linux-x64/clang/include/clang-c/CXCompilationDatabase.h
@@ -15,12 +15,11 @@
 #ifndef LLVM_CLANG_C_CXCOMPILATIONDATABASE_H
 #define LLVM_CLANG_C_CXCOMPILATIONDATABASE_H
 
-#include "clang-c/Platform.h"
 #include "clang-c/CXString.h"
+#include "clang-c/ExternC.h"
+#include "clang-c/Platform.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_CLANG_C_EXTERN_C_BEGIN
 
 /** \defgroup COMPILATIONDB CompilationDatabase functions
  * \ingroup CINDEX
@@ -169,8 +168,7 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_CLANG_C_EXTERN_C_END
+
 #endif