This refactors the logic for generating atomic instructions in TurboFan.
Instead of duplicating code via macros, we look up all information we
need from a table (via switch), and generate the respective graph from
that information.
This will allow to factor in changes for memory64 more easily.

R=ahaas@chromium.org

Bug: v8:10949
Change-Id: Ic2c78588f8ce555667f7e0220b1cc50c7074ded4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2440831
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Andreas Haas <ahaas@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70265}