ext lna for wdr4300

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@23431 52c4871e-980c-0410-b1e0-e73912ce01f8
should be better than any system call

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@23432 52c4871e-980c-0410-b1e0-e73912ce01f8
update

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@23433 52c4871e-980c-0410-b1e0-e73912ce01f8
update configs and use SLUB

git-svn-id: svn://svn.dd-wrt.com/DD-WRT@23434 52c4871e-980c-0410-b1e0-e73912ce01f8