ramips: fix wmr300 network detection

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38828 3c298f89-4303-0410-b956-a3cf2f4a3e73
ralink: add mt7620n dts files

Signed-off-by: John Crispin <blogic@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@38829 3c298f89-4303-0410-b956-a3cf2f4a3e73