lantiq: enable SysupgradeNAND for BTHOMEHUBV2B

Enables SysupgradeNAND for BTHOMEHUBV2B.

Depends on the following patches:
http://patchwork.openwrt.org/patch/5817/
http://patchwork.openwrt.org/patch/5848/
http://patchwork.openwrt.org/patch/5851/

Many thanks everyone for your help the last couple of days.

Ben

Signed-off-by: Ben Mulvihill <ben.mulvihill@gmail.com>

SVN-Revision: 41566

target/linux/lantiq/base-files/lib/upgrade/platform.sh

@@ -1,7 +1,17 @@
+. /lib/functions/lantiq.sh
+
 PART_NAME=firmware
 
 platform_check_image() {
 	[ "$#" -gt 1 ] && return 1
+	local board=$(lantiq_board_name)
+
+	case "$board" in
+		BTHOMEHUBV2B )
+			nand_do_platform_check $board $1
+			return $?;
+			;;
+	esac
 
 	case "$(get_magic_word "$1")" in
 		# uImage