[llvm] [RISCV] Lower e64 vector_deinterleave via ri.vunzip2{a,b} if available (PR #136321)

[Min-Yih Hsu via llvm-commits]

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

LGTM. The CI reported a clang-format error though

https://github.com/llvm/llvm-project/pull/136321