ARM: dts: sun9i: Add A80 R_PIO pin controller device node

The A80 has a secondary pin controller. Add a device node for it.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun9i-a80.dtsi

@@ -868,5 +868,19 @@ r_uart: serial@08002800 {
 			resets = <&apbs_rst 4>;
 			status = "disabled";
 		};
+
+		r_pio: pinctrl@08002c00 {
+			compatible = "allwinner,sun9i-a80-r-pinctrl";
+			reg = <0x08002c00 0x400>;
+			interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&apbs_gates 0>;
+			resets = <&apbs_rst 0>;
+			gpio-controller;
+			interrupt-controller;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			#gpio-cells = <3>;
+		};
 	};
 };