[llvm] [PAC][CodeGen][ELF][AArch64] Support signed TLSDESC (PR #113813)

[Daniil Kovalev via llvm-commits]

kovdan01 wrote:

### Merge activity

* **Dec 28, 4:12 AM EST**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/113813).


https://github.com/llvm/llvm-project/pull/113813