improve noncoherent dma checks

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22201 52c4871e-980c-0410-b1e0-e73912ce01f8
ipv6 nf support for recent broadcom models
swap support
ip advanced routing support where missing

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22202 52c4871e-980c-0410-b1e0-e73912ce01f8
correct wired client calc

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22203 52c4871e-980c-0410-b1e0-e73912ce01f8
update

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22204 52c4871e-980c-0410-b1e0-e73912ce01f8
rc6

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@22205 52c4871e-980c-0410-b1e0-e73912ce01f8