[clang] [CIR][AArch64] Lower NEON vrsra_n intrinsics (PR #191129)

[Andrzej Warzyński via cfe-commits]

https://github.com/banach-space approved this pull request.

LGTM % nits

This is very nicely crafted, well done and thank you for contributing 🙏🏻 

https://github.com/llvm/llvm-project/pull/191129