[clang] [clang][AArch64] Add --print-supported-extensions support (PR #65466)

[via cfe-commits]

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@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/TargetParser/AArch64TargetParser.h"
+#include "llvm/Support/raw_ostream.h"
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DanielKristofKiss wrote:

mybad missed first is the main module.

https://github.com/llvm/llvm-project/pull/65466