Port 4559bd69

Original Commit Message:

    Implements f32x4 and f64x2 ceil, floor, trunc, nearestint, arm64.

R=zhin@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I055b5d9c725c51df9e2e3e8274ed8c6a57e7dfad
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2242140Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#68325}