OpenWrt 21.02: backport lantiq xrx200 DSA switch

[Martin Schiller]

Hello all!

Now that the Lantiq xrx200 DSA switch has finally made it into the
master, I would like to ask whether we also want to pack this switch
into the 21.02 release.

The topic "DSA Support" is one of the key points of the 21.02 release
and therefore this would fit very well.

Any opinions?

Thanks, Martin