[clang] [llvm] [AArch64] Add intrinsics for non-widening FMOPA/FMOPS (PR #88105)

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Lukacma wrote:

I noticed that file names and file location are using sme2 as prefix. Shouldn't we use sme2p1 prefix for this intrinsic ?

https://github.com/llvm/llvm-project/pull/88105