kFloat32x4 needs to handle the endianness similar to kInt32x4.

Change-Id: Iaab2d6785d56c06fd00654bff174900550db9e47
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2411628Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/master@{#69897}