Now that Linus' tree has the new sn2 console driver, make sn2_defconfig enable 
it by default.  The device is major 204, minor 40.  Note that you'll probably 
have to update your elilo.conf and inittab to use the new driver, as it's 
called ttySG0 rather than ttyS0.
Signed-off-by: Jesse Barnes <jbarnes@sgi.com>
Signed-off-by: David Mosberger <davidm@hpl.hp.com>