[llvm] [MC][BPF] Avoid generating .note.GNU-stack section (PR #159960)

[via llvm-commits]

yonghong-song wrote:

> Alternatively, change MCAsmInfoELF::getNonexecutableStackSection . It already has a Ctx.getTargetTriple().isOSSolaris() check.

I thought about this as well. But ultimately I think allowing backend to override is a better choice as it will avoid adding arch specific checks in generic MCAsmInfoELF.

https://github.com/llvm/llvm-project/pull/159960