[clang] [llvm] [RISCV] Add Hazard3 Core as taped out for RP2350 (PR #102452)

[Sam Elliott via cfe-commits]

lenary wrote:

> Is this PR stacked on [b125071](https://github.com/llvm/llvm-project/commit/b125071eeb35ee4a76e126967b7c29d86a1fae56) (I don't see any note of that in the PR description at the moment)?
> 
> Edit: I found the comment that says that!

Yeah, sorry, I only stacked it about halfway through its life, because I got sick of editing those files.

https://github.com/llvm/llvm-project/pull/102452