[llvm] [NVPTX] add support for .debug_loc section (PR #110905)

[William G Hatch via llvm-commits]

willghatch wrote:

Note that the test changes are a bit noisy.  Some of the tests had drifted in terms of white space emitted for ASM comments, and there were enough test updates in this PR that I decided to just get in the whitespace changes as well.

https://github.com/llvm/llvm-project/pull/110905