Resolve "M2s DMA"

Closes #1

See merge request !1

This was just to see what happens

Does not support unaligned access

The failing is good, there is an rtl bug

Note: Make sure to apply this commit, or else fst dumping will break:
https://github.com/verilator/verilator/pull/5313/commits/94cd77b0ae7693dfafd15ed5bce68ff1c20b02b3