initial cut at /dev/crypto support. takes original mbuf "try, and discard

if we fail" semantics and extends to two varients of data movement: mbuf,
or an iovec style block.

src/etc/etc.i386/MAKEDEV

@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: MAKEDEV,v 1.91 2001/04/17 16:20:24 todd Exp $
+#	$OpenBSD: MAKEDEV,v 1.92 2001/05/13 15:39:23 deraadt Exp $
 #	$NetBSD: MAKEDEV,v 1.40 1996/03/31 00:50:47 perry Exp $
 #
 # Copyright (c) 1990 The Regents of the University of California.
@@ -197,7 +197,7 @@ all)
 	sh $this fd1 fd1B fd1C fd1D fd1E fd1F fd1G fd1H
 	sh $this xfs0 music
 	sh $this rmidi0 rmidi1 rmidi2 rmidi3 rmidi4 rmidi5 rmidi6 rmidi7
-	sh $this usbs
+	sh $this usbs crypto
 # MISSING:
 #	sh $this mouse-?
 	;;
@@ -239,6 +239,10 @@ std)
 	mknod ksyms		c 50 0  ; chmod 640 ksyms ; chown root.kmem ksyms
 	;;
 
+crypto)
+	mknod crypto		c 70 0	; chmod 666 crypto	
+	;;
+
 usb*)
 	rm -f usb$unit
 	mknod usb$unit c 61 $unit