Add nodes for the 4 mmc controllers found on A20 SoCs to
arch/arm/boot/dts/sun7i-a20.dtsi.
Signed-off-by: NDavid Lanzendörfer <david.lanzendoerfer@o2s.ch>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>