message: core(vsx): update vec_absd() workaround condition
diff: @@ -684,7 +684,8 @@ VSX_IMPL_LOAD_L8(vec_double2, double)
  #endif
  // absolute difference
  -#ifndef vec_absd
  +#ifndef _ARCH_PWR9
  +# undef vec_absd
  # define vec_absd(a, b) vec_sub(vec_max(a, b), vec_min(a, b))
  #endif
  