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/Analysis/DomTreeUpdater.h b/linux-x64/clang/include/llvm/Analysis/DomTreeUpdater.h
index 5ccce2e..d09154d 100644
--- a/linux-x64/clang/include/llvm/Analysis/DomTreeUpdater.h
+++ b/linux-x64/clang/include/llvm/Analysis/DomTreeUpdater.h
@@ -14,15 +14,17 @@
 #ifndef LLVM_ANALYSIS_DOMTREEUPDATER_H
 #define LLVM_ANALYSIS_DOMTREEUPDATER_H
 
-#include "llvm/Analysis/PostDominators.h"
+#include "llvm/ADT/SmallPtrSet.h"
 #include "llvm/IR/Dominators.h"
-#include "llvm/IR/Instructions.h"
 #include "llvm/IR/ValueHandle.h"
-#include "llvm/Support/GenericDomTree.h"
+#include "llvm/Support/Compiler.h"
+#include <cstddef>
 #include <functional>
 #include <vector>
 
 namespace llvm {
+class PostDominatorTree;
+
 class DomTreeUpdater {
 public:
   enum class UpdateStrategy : unsigned char { Eager = 0, Lazy = 1 };