[clang] [llvm] [FMV][AArch64] Expand feature dependencies using AArch64::ExtensionSet. (PR #113281)

[Alexandros Lamprineas via cfe-commits]

labrinea wrote:

I've left out the bf16 and i8mm dependencies fixup as they deserve a separate patch. I will be merging this until the end of today if no one objects.

https://github.com/llvm/llvm-project/pull/113281