[Bug target/115763] RISC-V: Use wrong SEW for vfmv.v.f when -march only has zvfhmin

[pan2.li at intel dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115763

--- Comment #3 from Li Pan <pan2.li at intel dot com> ---
Thanks, I have a quick fix but it looks to break the zvfh to generate the vfmv
insn. Let me have another try.