In the reland, https://crrev.com/c/2157799, I accidentally left out the
arm64 implementation. This adds it.

R=clemensb@chromium.org

Bug: v8:9909
Change-Id: I0e36f85402cd86ed7adaace43e7ec88f9aaad659
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2161566Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67341}