bcm63xx: build images for 6328 reference boards with various flash sizes

Build images for 96328avng and 963281TAN (untested) for three different
flash sizes: 4MB, 8MB, and 16MB.

Known issues:
 * Button setup unknown, thus no fail-safe available.
 * All other BCM6328 and BCM63XX issues

SVN-Revision: 32004

target/linux/brcm63xx/base-files/lib/brcm63xx.sh

@@ -18,6 +18,14 @@ brcm63xx_detect() {
 	fi
 
 	case "$board_name" in
+	96328avng)
+		status_led="96328avng::power"
+		ifname=eth0
+		;;
+	963281TAN)
+		status_led="963281TAN::power"
+		ifname=eth0
+		;;
 	96348GW)
 		status_led="power"
 		brcm63xx_has_reset_button="true"