[llvm] [clang] [RISCV] Add support for new unprivileged extensions defined in profiles spec (PR #77458)

[Luke Lau via cfe-commits]

lukel97 wrote:

> These names will be used in profiles only, but I don't know if we should add them to RISCVUsage.rst.

Good point, I added them in anyway so we're consistent at least. I couldn't find any other "featureless" extensions that we currently support.

https://github.com/llvm/llvm-project/pull/77458