lantiq: Update to the latest DSL driver / application versions

Thanks to Sylwester Petela for testing my patch (successfully on an
ADSL connection) and for pointing out some configuration mistakes.
Others (including me) have also successfully tested this extensively
on VDSL connections.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

SVN-Revision: 46920