This CL has started using new vector instructions introduced
in Power 9, which includes:

- Move To VSR Double Doubleword
- Vector Extract

Change-Id: Ieda677b33f4aae059afb3ab94d18f044001887a5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2438956Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#70240}