prefetch are noops on VSX
prefetch are noops on VSX

ritsu1228/eigen,pasuka/eigen,pasuka/eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,TSC21/Eigen,pasuka/eigen,Zefz/eigen,TSC21/Eigen,pasuka/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,ROCmSoftwarePlatform/hipeigen,ROCmSoftwarePlatform/hipeigen,ritsu1228/eigen,TSC21/Eigen,toastedcrumpets/eigen,toastedcrumpets/eigen,Zefz/eigen,ritsu1228/eigen,toastedcrumpets/eigen,Zefz/eigen,ritsu1228/eigen,Zefz/eigen,toastedcrumpets/eigen,TSC21/Eigen