Update IPs and remove unused register_interface

[phsauter]

Update every IP using bender vendor.
Adjust patches accordingly, slightly clean them up.
Remove register_interface as it is no longer used (I kept APB, it is also not used but a common enough standard that I think it should remain in this repo).

[phsauter]

@ezelioli can you give the bender files and the patch files a quick look?
Ignore the rest, it should just be generic updates.

[ezelioli]

LGTM

[ezelioli]

@ezelioli can you give the bender files and the patch files a quick look? Ignore the rest, it should just be generic updates.

The only point I noticed was that it seems that we could get rid of APB dependency. But maybe it is worth keeping in the codebase in case needed by student projects?

[phsauter]

@ezelioli can you give the bender files and the patch files a quick look? Ignore the rest, it should just be generic updates.

The only point I noticed was that it seems that we could get rid of APB dependency. But maybe it is worth keeping in the codebase in case needed by student projects?

Yes, this is intentional since its a widely used standard and out of the interconnects we have, I think APB is the most likely to be used by students.
In this way is serves the purpose of making it slightly easier to add other peripherals, which is why I chose to keep it.