kdba_io

[Christoph Hellwig]

Currently there's a file arch/ia64/sn/io/sn2/kdba_io.c for SN2 that contains
a single kdb command, 'io'.

The implementation is:

static int
kdba_io(int argc, const char **argv, const char **envp, struct pt_regs *regs)
{
	kdb_printf("kdba_io entered with addr 0x%p\n", (void *) regs);
	
	return(0);
}

which collides a bit with the description ontop of it.  Is there a real use
for this or can we just kill it.  Or should it be moved to generic code
with a less confusing name?  (couldn't imagine why)