[clang] [llvm] [AArch64] Split FeatureLS64 to LS64_ACCDATA and LS64_V. (PR #101712)

[Alexandros Lamprineas via cfe-commits]

labrinea wrote:

Just letting you know that I will be on holiday for a couple of weeks before I have a chance to respond to review comments.

https://github.com/llvm/llvm-project/pull/101712