[clang] [clang][CIR] Fix missing dependency of MLIRCIR (PR #116221)

[Luohao Wang via cfe-commits]

Luohaothu wrote:

> Do you need me to merge this for you? Could you also fix the message about private email addresses above?

Thanks. I'll fix it later today.

https://github.com/llvm/llvm-project/pull/116221