[clang] [llvm] [PowerPC] Add intrinsics for rldimi/rlwimi/rlwnm (PR #82968)

[Chen Zheng via cfe-commits]

https://github.com/chenzheng1030 approved this pull request.

LGTM except two comments in the case change. One is a nit and the other one should be other issue unrelated to this patch.

Thanks for implementing this.

https://github.com/llvm/llvm-project/pull/82968