Try to catch up with reality:

Try to catch up with reality:
- Chase the split of pcm(4). This unbreaks LINT compiles.
- sc(4) basically works and a lot of its options should be supported.
- Add the creator and ofw_console drivers.
- vinum(4) should work, at least its module was turned on for sparc64 a while
  ago.
- Don't build sio(4). Its EBus front-end was removed a while ago and the ISA
  one hardly works. Use uart(4) instead, it's not perfect yet but works much
  better.