Add serial port (for the Fuloong)

src/etc/etc.loongson/fbtab

@@ -1,2 +1,3 @@
+/dev/tty00	0600	/dev/console
 /dev/ttyC0	0600	/dev/console:/dev/wskbd:/dev/wskbd0:/dev/wsmouse:/dev/wsmouse0:/dev/ttyCcfg
 /dev/X0		0600	/dev/wsmouse:/dev/wsmouse0:/dev/wskbd:/dev/wskbd0:/dev/ttyC0

src/etc/etc.loongson/ttys

@@ -1,11 +1,8 @@
 #
-#	$OpenBSD: ttys,v 1.1 2010/01/23 19:26:45 matthieu Exp $
+#	$OpenBSD: ttys,v 1.2 2010/02/17 18:08:46 miod Exp $
 #
 # name	getty				type	status		comments
 #
 console	"/usr/libexec/getty std.9600"	vt220	on  secure
 ttyC0	"/usr/libexec/getty std.9600"	vt220	off secure
 tty00	"/usr/libexec/getty std.9600"	unknown	off secure
-tty01	"/usr/libexec/getty std.9600"	unknown	off secure
-tty02	"/usr/libexec/getty std.9600"	unknown	off secure
-tty03	"/usr/libexec/getty std.9600"	unknown	off secure