[AArch64] Implement INIT/ADJUST_TRAMPOLINE (#70267)
Add support for llvm.init.trampoline and llvm.adjust.trampoline
intrinsics for AArch64.
Fixes https://github.com/llvm/llvm-project/issues/65573
Fixes https://github.com/llvm/llvm-project/issues/76927
Fixes https://github.com/llvm/llvm-project/issues/83555
Updates https://github.com/llvm/llvm-project/pull/66157
