sunxi: Fix gmac not working on the Colombus board

The phy is using a RGMII interface, which we need to specify in our
board-config, and the dts needs a gmac section (the dts changes have
also been submitted to the kernel).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

arch/arm/dts/sun6i-a31-colombus.dts

@@ -66,6 +66,18 @@
 	status = "okay";
 };
 
+&gmac {
+	pinctrl-names = "default";
+	pinctrl-0 = <&gmac_pins_rgmii_a>;
+	phy = <&phy1>;
+	phy-mode = "rgmii";
+	status = "okay";
+
+	phy1: ethernet-phy@1 {
+		reg = <1>;
+	};
+};
+
 &i2c0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c0_pins_a>;

configs/Colombus_defconfig

@@ -7,7 +7,7 @@ CONFIG_USB1_VBUS_PIN=""
 CONFIG_DEFAULT_DEVICE_TREE="sun6i-a31-colombus"
 # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
 CONFIG_SPL=y
-CONFIG_SYS_EXTRA_OPTIONS="SUNXI_GMAC"
+CONFIG_SYS_EXTRA_OPTIONS="SUNXI_GMAC,RGMII"
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set