[llvm] [AArch64][TargetParser] move ArchInfo into tablegen [NFC] (PR #92037)

[Alexandros Lamprineas via llvm-commits]

labrinea wrote:

I have checked the changes from the NFC standpoint and they seem fine. I will therefore approve this patch, but I would like to see the two lists of features being unified in the futire, or at least we should initiate a discussion about how to pursue that direction.

https://github.com/llvm/llvm-project/pull/92037