x86: templatize shift/rotate insns

x86: templatize shift/rotate insns

With the multitude of new APX templates, it finally becomes desirable to
further remove redundancy by also templatizing basic arithmetic insns.
Continue with the "ordinary" shift and rotate ones.

While there also drop the APX form of RCL/RCR with Imm1 omitted. Other
shift insns as well as ROR/ROL were deliberately left without this form
as well. Note that there's also no testsuite adjustment needed for this,
indicating that the form wasn't tested either.

Furthermore since RCL/RCR already had non-NDD APX forms, those end up
being added for the other 6 mnemonics, too.