Passing `ip/r1` as scratch to LoadV128 anf StoreV128.

Change-Id: Ie86d3bd241065de985f98025e7bb60aba4cd42d3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3576132Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#79864}