small note to GENERIC for isa dependency

[M. Warner Losh]

In message: <20040421143336.GA31427 at daemon.li>
            Josef El-Rayes <josef at daemon.li> writes:
: "M. Warner Losh" <imp at bsdimp.com>:
: > And I do think there's code that unwisely assumes isa will always be
: > there.
: 
: whats the sense of a removable option which will only result in a
: broken kernel build, if it is removed? why not hide it or
: make a note so no one tries to remove it?

it is an option no one has tried to remove until recently, and the
amount of code that unwisely depends on it was unknown until such
efforts were undertaken.  It could be made to work, just that nobody
has climbed the hill to make it work.

Warner