The immediate offset passed to `lay` might be bigger than the
allowed 20 bits, in which case we need to add it to the base
register manually.

Issue came up after this CL https://crrev.com/c/2904926 when
a related test case started failing as the offset was changed.

Change-Id: I9997bf0ed4e42e32ac52bbd2771bbcb13a328e64
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2983164Reviewed-by: Junliang Yan <junyan@redhat.com>
Commit-Queue: Milad Fa <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#75341}