[clang] [RISCV] Change required features for Zvfhmin intrinsics from ZvfhminOrZvfh to Zvfhmin (PR #77866)

[Craig Topper via cfe-commits]

topperc wrote:

> I think this was discussed in https://reviews.llvm.org/D150253?id=523696#inline-1464348 ?

I think the its been clarified since then.

https://github.com/llvm/llvm-project/pull/77866