v3d/simulator: enable new simulator

We were trying a more recent snapshot of the simulator, and we need this MR to get it built.

It is worth that new simulator introduces some regressions. But after checking, all those were happening because we were not doing things on the safest way, so applies to old versions too. I created issue !11039 (merged) for those.

It is worth to note that ideally I would have liked to be able to enable the new snapshot, and still being able to build with the old simulator, because as it is, as soon as this MR lands, people would need to switch to the more recent simulator. FWIW this is possible with one of the commits (remove has_gca wrapper) but not with the other (hw mem changed types). But I still hope that the reviewer gets an idea to avoid that.