[clang] [clang][SPIR-V] Set AS for the SPIR-V logical triple (PR #88939)

[Nathan Gauër via cfe-commits]

Keenuts wrote:

Thanks all!
Agree with Bogner, let's unblock the tests first.
As for the address space for globals, this isn't something we have looked into yet, so I'd be in favor of keeping the same behavior as the SPIRN flavor until we have a reason to diverge (as in "thought about this issue" 😊)



https://github.com/llvm/llvm-project/pull/88939