Add /dev/audio to alpha

src/etc/etc.alpha/MAKEDEV

@@ -1,5 +1,5 @@
 #!/bin/sh -
-#	$OpenBSD: MAKEDEV,v 1.52 2001/05/30 02:11:11 deraadt Exp $
+#	$OpenBSD: MAKEDEV,v 1.53 2001/06/22 14:54:04 nate Exp $
 #	$NetBSD: MAKEDEV,v 1.8.4.1 1996/06/18 00:41:56 cgd Exp $
 #
 # Copyright (c) 1990 The Regents of the University of California.
@@ -75,6 +75,7 @@
 #	bpf*	Berkeley Packet Filter
 #	fd	makes fd/* for the fdescfs.
 #	lkm	loadable kernel modules interface
+#	audio	audio device
 #	tun*	network tunnel driver
 #	mmclock	memory mapped clock
 #	kbd	keyboard (provides events, for X11)
@@ -494,6 +495,22 @@ lkm)
 	chmod 640 lkm
 	;;
 
+audio*)
+	[ "$unit" = "0" ] && n= || n=$unit
+	audio=audio$n
+	sound=sound$n
+	mixer=mixer$n
+	audioctl=audioctl$n
+	major=24
+	rm -f $audio $sound $mixer $audioctl
+	mknod $sound    c $major $unit
+	mknod $audio    c $major $(( $unit + 128 ))
+	mknod $mixer    c $major $(( $unit + 16 ))
+	mknod $audioctl c $major $(( $unit + 192 ))
+	chown root.wheel $audio $sound $mixer $audioctl
+	chmod 666 $audio $sound $mixer $audioctl
+	;;
+
 mmclock)
 	rm -f mmclock
 	mknod mmclock c 28 0