[clang] [Clang] Respect MS layout attributes during CUDA/HIP device compilation (PR #146620)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> LGTM, but it would be great to get someone familiar with MS side of things to take a look.
> 
> @rnk is there anything else we need to worry about?

@rnk is out on vacation, so I'd say we're good to go.

https://github.com/llvm/llvm-project/pull/146620