[llvm] [llvm][aarch64] Add support for the MS qualifiers __ptr32, __ptr64, _sptr, __uptr (PR #112793)

[Eli Friedman via llvm-commits]

https://github.com/efriedma-quic commented:

Do we need to add a bailout somewhere for fastisel and/or globalisel?

https://github.com/llvm/llvm-project/pull/112793