[llvm] [RISC-V] Limit vscale interleaving to addrspace 0. (PR #91573)

[Luke Lau via llvm-commits]

https://github.com/lukel97 approved this pull request.

Updating the intrinsics for accept overloaded pointer types seems sensible to me, but we'd probably want to do it for all load/store intrinsics whilst we're at it. This looks good in the meantime

https://github.com/llvm/llvm-project/pull/91573