[compiler-rt] [llvm] [AArch64] Implement INIT/ADJUST_TRAMPOLINE (PR #70267)

[Carlos Seo via llvm-commits]

ceseo wrote:

> Description:
> 
> > Updates `https://github.com/llvm/llvm-project/issues/27174`
> 
> 27174 is an AMDGPU issue. Is there a typo?

Sorry, I had the number from an issue in the Julia repo in my mind. I'll fix that. This PR actually fixes other issues as well. I'll reference those.

https://github.com/llvm/llvm-project/pull/70267