We also define the getters and setters for the newly
defined registers and their lanes.

Change-Id: I1da9caed5f2f2d9ce79f43d9f70dc994f2200bff
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2718468Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#73027}