[clang] [RISCV] Use Zvhmin instead of Zvfh on RUN lines for some intrinsic tests. NFC (PR #101540)

[Craig Topper via cfe-commits]

topperc wrote:

> Do we want vget/vset/vcreate/vundefined use `zvfhmin` rather than `zvfh`?

Yes, according to the feedback on https://github.com/riscv-non-isa/rvv-intrinsic-doc/issues/351  I believe that requires a change to riscv_vector.td so its out of scope for this patch.

https://github.com/llvm/llvm-project/pull/101540