[clang] [llvm] [RISCV] Support version 0.9 of Zvabd (PR #218576)

[Bohan Lei via cfe-commits]

garthlei wrote:

> Looks like the link in the PR description links to zvzip?

Oops. It's supposed to be https://github.com/riscv/riscv-isa-manual/pull/3279.

https://github.com/llvm/llvm-project/pull/218576