Port 34f9bcdb
https://crrev.com/c/2067845

Original Commit Message:

  Implements i8x16.abs, i16x8.abs, and i32x4.abs.

Change-Id: I95800caa298860326e3deadea2fce71640ae0227
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2086532Reviewed-by: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Deepti Gandluri <gdeepti@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66601}