Power 9 offers new Vector Extract instructions which now can be used
to implement Extract Lane opcodes.

Change-Id: Ie81960a5cc9ca3f5af4bf248a720859951f43ed3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2521361Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#70996}