[llvm] [NVPTX] Fix DWARF address space for globals (PR #122715)

[Alexander Peskov via llvm-commits]

apeskov wrote:

@Artem-B could you also take a look. This patch expands the file `NVPTXAddrSpace.h` introduced by you a few months ago.

https://github.com/llvm/llvm-project/pull/122715