Add /dev/agpgart for AGP.

Reviewed by:	dfr

etc/MAKEDEV

@@ -139,6 +139,7 @@
 #	ipl	ipfilter control devices (ipl, ipnat, ipstate, ipauth)
 #	kbd	keyboard devices
 #	3dfx*	3dfx voodoo device for glide (tdfx), links 3dfx to 3dfx#
+#	agpgart	AGP interface
 #
 
 if [ -n "$MAKEDEVPATH" ]; then
@@ -261,6 +262,7 @@ all)
 	sh MAKEDEV i4b i4bctl i4btrc0 i4btrc1		# cdev, ISDN
 	sh MAKEDEV i4btel0 i4btel1 i4bteld0 i4bteld1	# cdev, ISDN
 	sh MAKEDEV i4brbch0 i4brbch1			# cdev, ISDN
+	sh MAKEDEV agpgart				# cdev, AGP
 	;;
 
 # a much restricted set of the above, to save precious i-nodes on the
@@ -1552,6 +1554,10 @@ mlx*)
 	ln -sf 3dfx$unit 3dfx
 	;;
 
+agpgart)
+	mknod agpgart c 148 0
+	;;
+
 twe*)
 	unit=`expr $i : 'twe\(.*\)'`
 	mknod twe$unit c 146 $unit