[clang] [clang] Support -Wa, options -mmsa and -mno-msa (PR #99615)

[YunQiang Su via cfe-commits]

wzssyqa wrote:

I think that you may need to detect that whether  integrated-as is used.
If so, pass `-target-feature` option.

https://github.com/llvm/llvm-project/pull/99615