[AVX-512] Remove the remaining masked shift by immediate or by single value. Autoupgr...

[AVX-512] Remove the remaining masked shift by immediate or by single value. Autoupgrade them to recently introduced unmasked versions and a select.

After this I'll add the unmasked intrinsics to InstCombineCalls to finish making our handling of these types of shuffles consistent between AVX-512 and the legacy intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286725 91177308-0d34-0410-b5e6-96231b3b80d8