Because this code is compile-time gated, it's bit-rotted as new
functions have come along. This patch brings things back to
parity with x86/x64.

Bug: v8:10012
Change-Id: Iba4cd1155a1ae46742ecddbed96f36938a10db48
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2066973Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Richard Townsend <richard.townsend@arm.com>
Cr-Commit-Position: refs/heads/master@{#66419}