[llvm] [DataLayout] Refactor storage of non-integral address spaces (PR #105734)

[Alexander Richardson via llvm-commits]

arichardson wrote:

> The idea makes sense to me, the "nonintegrality" is a pointer property. I wish they were combined into one "pn" spec.

Agreed, it makes more sense to me to have this be part of the pointer spec: https://github.com/llvm/llvm-project/pull/105735 (with the additional change of splitting the non-integral properties).

https://github.com/llvm/llvm-project/pull/105734