Add bindings for Aster, Iris and Iris V2 carrier boards our
Colibri iMX6S/DL may be mated with.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>