add ambit netgear models

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22550 52c4871e-980c-0410-b1e0-e73912ce01f8
add defines

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22551 52c4871e-980c-0410-b1e0-e73912ce01f8
prepare

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22552 52c4871e-980c-0410-b1e0-e73912ce01f8
fun with gpios

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22553 52c4871e-980c-0410-b1e0-e73912ce01f8