[clang] [libclc] [llvm] [AMDGPU] Add a new target gfx1152 (PR #94534)

[Jay Foad via cfe-commits]

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

LGTM.

Could also update `flang/cmake/modules/AddFlangOffloadRuntime.cmake` but I don't really know if it's our responsibility to update Flang.

https://github.com/llvm/llvm-project/pull/94534