[clang] [llvm] [Clang][X86] Add Clang23Compat for __int128 bit-field ABI change (PR #220788)

[Phoebe Wang via cfe-commits]

phoebewang wrote:

> Hi Pheobe, can you help to back out this change for PlayStation? We have to maintain a stable ABI for our platform. Thank you!

Sure, [b1ef8c4](https://github.com/llvm/llvm-project/pull/220788/commits/b1ef8c4b531ff1a84695a8f3c43b47950e3e7f8e)

https://github.com/llvm/llvm-project/pull/220788