This CL generalizes the lowering of special CallDescriptors in the
int64-lowering. The reason is a planned extension of the special
handling due to a refactoring of the AtomicWait implementation.

R=jkummerow@chromium.org

Bug: v8:10108
Change-Id: I48d0087e2ad00ba9b44c5198ffdbbae8eb575a85
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2069333Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Commit-Queue: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#66420}