redboot peek and poke commands for prodding I/O ports

[Andrew Lunn]

> I went with iopeek and iopoke -- in and out are a little generic (in one
> sense, and i386 specific in another)...

OK. 

> The first time I submitted the patch I was asked to disable it by
> default, then recently I decided that enabling by default on x86 made
> sense. In any case -- I've enabled it by default now.

I did not remember you had been asked to disable it by default. So
i've changed the cdl to disable it. 

        Andrew