ARM: dts: sun4i: Add pin-muxing info for the mmc0 controller

mmc0 is the only controller actually being used on boards, so limit the
pin-muxing options to that.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun4i-a10.dtsi

@@ -579,6 +579,20 @@
 				allwinner,drive = <0>;
 				allwinner,pull = <0>;
 			};
+
+			mmc0_pins_a: mmc0@0 {
+				allwinner,pins = "PF0","PF1","PF2","PF3","PF4","PF5";
+				allwinner,function = "mmc0";
+				allwinner,drive = <2>;
+				allwinner,pull = <0>;
+			};
+
+			mmc0_cd_pin_reference_design: mmc0_cd_pin@0 {
+				allwinner,pins = "PH1";
+				allwinner,function = "gpio_in";
+				allwinner,drive = <0>;
+				allwinner,pull = <1>;
+			};
 		};
 
 		timer@01c20c00 {