ARM: dts: sun8i: Add mmc2_8bit_pins to sun8i-h3.dtsi

Add a pinctrl node for mmc2 in 8 bits mode on H3 SoCs.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun8i-h3.dtsi

@@ -417,6 +417,16 @@ mmc1_pins_a: mmc1@0 {
 				allwinner,drive = <SUN4I_PINCTRL_30_MA>;
 				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
 			};
+
+			mmc2_8bit_pins: mmc2_8bit {
+				allwinner,pins = "PC5", "PC6", "PC8",
+						 "PC9", "PC10", "PC11",
+						 "PC12", "PC13", "PC14",
+						 "PC15", "PC16";
+				allwinner,function = "mmc2";
+				allwinner,drive = <SUN4I_PINCTRL_30_MA>;
+				allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+			};
 		};
 
 		ahb_rst: reset@01c202c0 {