Started KS8999 driver, also some bug fixes in flight-rnh
Changed pin C9 to default input instead of MC02

When the RNH powers up we want the KSZ in a full off state including
no clocks. When the pin is in MC02 mode it outputs some (selectable)
clock. There is no way to shut it off as far as I can tell short of
setting the pin to a different mode.