Integrate LLVM at llvm/llvm-project@aefad851672e
Integrate LLVM at llvm/llvm-project@aefad851672e

Updates LLVM usage to match
[aefad851672e](https://github.com/llvm/llvm-project/commit/aefad851672e)

FUTURE_COPYBARA_INTEGRATE_REVIEW=https://github.com/openxla/xla/pull/11241 from Intel-tensorflow:kanvi/bmm-mul-add_bf16 8fb80082e8c545e007ab7a2d363eb7b7c251fd07
