sun7i: Add support for a number of new sun7i boards

Add support for boards which I own and which already have a dts file in the
upstream kernel.

Signed-off-by: Henrik Nordstrom <henrik@henriknordstrom.net>
Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>