[AVX-512] Convert the rest of the masked shift by immediate and by single element...

[AVX-512] Convert the rest of the masked shift by immediate and by single element builtins over to the newly added unmasked builtins and a select.

This should also fix PR30691 since the new builtins are handled like the legacy builtins in the backend.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@286714 91177308-0d34-0410-b5e6-96231b3b80d8