[clang] [AArch64][Clang] Fix linker error for function multiversioning (PR #74358)

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@@ -1752,8 +1754,10 @@ static void AppendTargetClonesMangling(const CodeGenModule &CGM,
   const TargetInfo &TI = CGM.getTarget();
   if (TI.getTriple().isAArch64()) {
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DanielKristofKiss wrote:

It was not supported in the original function multi versioning neither and excluded to that as we building top of it.
Anyway created a ticket for it https://github.com/ARM-software/acle/issues/291 . I need to check what GCC and others say about it.

https://github.com/llvm/llvm-project/pull/74358