[clang] [RISCV] Added definition of Ventana veyron-v1 processor. (PR #65535)

[via cfe-commits]

mgudim wrote:

> I think you can drop the merge commit using `git rebase -i`. You may have to pass `--rebase-merges` to have the ability to drop the merge commit. Then you can pull upstream and `git rebase upstream/main`.

Thanks Michael, I tried but messed it up (I see more changes than I intended). Let me try again. If I mess it up again, is it OK if I just close this PR and start over?

https://github.com/llvm/llvm-project/pull/65535