These two files needed to be touched after the recent changes to
DRIVER_ATTR/driver_attribute structure members in 2.5.56.  Personally,
it doesn't look to me like the size parameter should be removed, as now
users will need to hardcode PAGE_SIZE into their functions, rather than
it being passed from the place of allocation.  But I'm not familiar with
the driverfs changes, so can't really say.

These changes, or something similar, are needed to make ohci-dbg and
ehci-dbg work at all in 2.5.56.  ehci is untested, but compiles here.
I've tested the ohci changes and they appear to work.