ARM: dts: sun6i: Add pinmux settings for the ir pins

Add pinmux settings for the ir receive pin of the A31.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun6i-a31.dtsi

@@ -901,6 +901,13 @@ r_pio: pinctrl@01f02c00 {
 			#interrupt-cells = <2>;
 			#size-cells = <0>;
 			#gpio-cells = <3>;
+
+			ir_pins_a: ir@0 {
+				allwinner,pins = "PL4";
+				allwinner,function = "s_ir";
+				allwinner,drive = <0>;
+				allwinner,pull = <0>;
+			};
 		};
 	};
 };