[RISCV] Define vector mask-register logical intrinsics.

Define vector mask-register logical intrinsics and lower them
to V instructions. Also define pseudo instructions vmmv.m
and vmnot.m.

We work with @rogfer01 from BSC to come out this patch.

Authored-by: Roger Ferrer Ibanez <rofirrim@gmail.com>
Co-Authored-by: Zakk Chen <zakk.chen@sifive.com>

Differential Revision: https://reviews.llvm.org/D93705