Add support for revision D of the MI424WR.
Rev D swaps LAN & WAN ports so this patch maintains
eth0 for LAN and eth1 for WAN. For details on rev D usage,
see http://wiki.openwrt.org/toh/actiontec/mi424wr
Signed-off-by: Jose Vasconcellos <jvasco@verizon.net>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32820 3c298f89-4303-0410-b956-a3cf2f4a3e73