Updated verilator waivers so the sim builds

[HU90m]

No description provided.

[marnovandermaas]

Thanks for making these changes. I had been meaning to fix the Verilator lint file for a while. On which version of Verilator did you test this?

[nbdd0121]

I think the lint that you're trying to mute is a legit warning.

In ibex_register_file_fpga, if RdataMuxCheck is not enabled then the oh_raddr_a_err and oh_raddr_b_err wires are indeed not driven. Probably that should be a RTL fix instead of lint fix.

[HU90m]

Thanks for making these changes. I had been meaning to fix the Verilator lint file for a while. On which version of Verilator did you test this?

Verilator 4.210 (The officially supported ibex version)

[HU90m]

I think the lint that you're trying to mute is a legit warning.

In ibex_register_file_fpga, if RdataMuxCheck is not enabled then the oh_raddr_a_err and oh_raddr_b_err wires are indeed not driven. Probably that should be a RTL fix instead of lint fix.

I've moved the Verilator top over to using ibex_register_file_ff in #93, which it should have been using anyway and with which this waiver isn't needed.

Closing this PR in favour of #93