[llvm] [AMDPGU] Auto-upgrade ELF mangling in the data layout (PR #163644)

[via llvm-commits]

b-sumner wrote:

> > For those, I'd say the warning is exposing a problem which should be fixed by updating the 4 .ll files in the device library,
> 
> Those libraries are external to LLVM so it will take a long time for users to get the newer version.

I don't think that's a great reason to disable this warning in the compiler.

https://github.com/llvm/llvm-project/pull/163644