add support for /dev/crypto

etc/MAKEDEV

@@ -128,6 +128,7 @@
 #	apm	Advanced Power Management BIOS
 #	apmctl	APM BIOS control device
 #	bpf*	packet filter
+#	crypto	crypto interface
 #	speaker	pc speaker
 #	tw*	xten power controller
 #	snd*	various sound cards
@@ -341,6 +342,7 @@ all)
 	sh $0 agpgart					# AGP
  	sh $0 nsmb0					# SMB/CIFS
 	sh $0 ti0 ti1					# ti(4)
+	sh $0 crypto					# crypto
 	;;
 
 # a much restricted set of the above, to save precious i-nodes on the
@@ -1770,6 +1772,11 @@ elan*)
 	chmod 600 elan-mmcr
 	;;
 
+crypto)
+	mknod crypto c 70 0 root:operator
+	chmod 666 crypto
+	;;
+
 local)
 	umask 0			# XXX should be elsewhere
 	sh $0.local