ralink: add support for mt7621 ethernet

somehow all switch ports still come up as 10mbit.

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43237 3c298f89-4303-0410-b956-a3cf2f4a3e73
ralink: fix up dts for mt7621 eval board

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

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@43238 3c298f89-4303-0410-b956-a3cf2f4a3e73
Merge branch 'master' of git://git.openwrt.org/openwrt