Enable console support for SGI O2 workstations. Switch between the serial

and graphical console based on the selection made in the ARCBIOS.
Early attachment of gbe(4) is still required, otherwise we have a working
graphical console.
ok miod@

src/etc/etc.sgi/ttys

@@ -1,9 +1,10 @@
 #
-#	$OpenBSD: ttys,v 1.1 2004/08/06 21:58:22 pefo Exp $
+#	$OpenBSD: ttys,v 1.2 2007/12/14 16:16:28 jsing Exp $
 #
 # name	getty				type	status		comments
 #
 console	"/usr/libexec/getty std.9600"	unknown	off secure
+ttyC0	"/usr/libexec/getty Pc"		vt220	on  secure
 tty00	"/usr/libexec/getty std.9600"	unknown	on  secure
 tty01	"/usr/libexec/getty std.9600"	unknown	off secure
 tty02	"/usr/libexec/getty std.9600"	unknown	off secure