[libc] [llvm] [LLVM] Make the GPU loader utilities an LLVM tool (PR #132096)

[Jon Chesterfield via llvm-commits]

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

Breaking the cyclic dep is good. I'd really like to see more runtime tests on the gpus in general and these are a clean way to do that.

https://github.com/llvm/llvm-project/pull/132096