This patch adds the vector doublword rotate and shift instructions
introduced in Power ISA Version 2.07:

  - Vector Rotate Left Doubleword instruction (vrld)
  - Vector Shift Left Doubleword (vsld)
  - Vector Shift Right Doubleword (vsrd)
  - Vector Shift Right Algegbraic Doubleword (vsrad)
Signed-off-by: NTom Musta <tommusta@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>