[clang] [clang][SPIR-V] Fix OpenCL addrspace mapping when using non-zero default AS (PR #137187)

[Wu Yingcong via cfe-commits]

yingcong-wu wrote:

Hi @sarnex , this change is crucial for the device sanitizers since it addresses a long-standing OMP related issue of us. Please help keep this change. Thanks.

https://github.com/llvm/llvm-project/pull/137187