This patch adds two Altivec unsigned doublword modulo instructions that
are introduced in Power ISA Version V2.07:

  - vaddudm : Vector Add Unsigned Doubleword Modulo
  - vsubudm : Vector Subtrace Unsigned Doubleword Modulo
Signed-off-by: NTom Musta <tommusta@gmail.com>
Signed-off-by: NAlexander Graf <agraf@suse.de>