[rc/3.2.x] LLVM bump for gfx950 target support (triton-lang#5417)

This PR brings in required LLVM bumps and additional targets for gfx950
support.
- triton-lang#5040
- triton-lang#5064
- triton-lang#5180
- triton-lang#5242
- triton-lang#5392

Note this PR reverts the last two PRs to only focus on the LLVM upgrade
- triton-lang#5347
- triton-lang#5191

---------

Co-authored-by: peterbell10 <[email protected]>
Co-authored-by: Hongtao Yu <[email protected]>
Co-authored-by: Lei Zhang <[email protected]>
Co-authored-by: Jungwook Park <[email protected]>
(cherry picked from commit f11c5ba)

Author: 5 people

cmake/llvm-hash.txt

@@ -1 +1 @@
-b5cc222d7429fe6f18c787f633d5262fac2e676f
+86b69c31642e98f8357df62c09d118ad1da4e16a