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/MC/MCSchedule.h b/linux-x64/clang/include/llvm/MC/MCSchedule.h
index df3248e..ee0e5b4 100644
--- a/linux-x64/clang/include/llvm/MC/MCSchedule.h
+++ b/linux-x64/clang/include/llvm/MC/MCSchedule.h
@@ -14,7 +14,6 @@
 #ifndef LLVM_MC_MCSCHEDULE_H
 #define LLVM_MC_MCSCHEDULE_H
 
-#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/Config/llvm-config.h"
 #include "llvm/Support/DataTypes.h"
@@ -22,6 +21,7 @@
 
 namespace llvm {
 
+template <typename T> class ArrayRef;
 struct InstrItinerary;
 class MCSubtargetInfo;
 class MCInstrInfo;
@@ -205,7 +205,7 @@
 /// subtargets can't be done. Nonetheless, the abstract model is
 /// useful. Futhermore, subtargets typically extend this model with processor
 /// specific resources to model any hardware features that can be exploited by
-/// sceduling heuristics and aren't sufficiently represented in the abstract.
+/// scheduling heuristics and aren't sufficiently represented in the abstract.
 ///
 /// The abstract pipeline is built around the notion of an "issue point". This
 /// is merely a reference point for counting machine cycles. The physical