* Allwinner GMAC ethernet controllerThis device is a platform glue layer for stmmac.Please see stmmac.txt for the other unchanged properties.Required properties: - compatible: Should be "allwinner,sun7i-a20-gmac" - clocks: Should contain the GMAC main clock, and tx clock The tx clock type should be "allwinner,sun7i-a20-gmac-clk" - clock-names: Should contain the clock names "stmmaceth", and "allwinner_gmac_tx"Optional properties:- phy-supply: phandle to a regulator if the PHY needs oneExamples: