ARM: at91/dt: sama5d2: add pio controller node

Add pio4 controller node to enable pinmux and gpio.
Signed-off-by: NLudovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

arch/arm/boot/dts/sama5d2.dtsi

@@ -921,6 +921,20 @@
 				clocks = <&twi1_clk>;
 				status = "disabled";
 			};
+
+			pioA: pinctrl@fc038000 {
+				compatible = "atmel,sama5d2-pinctrl";
+				reg = <0xfc038000 0x600>;
+				interrupts = <18 IRQ_TYPE_LEVEL_HIGH 7>,
+					     <68 IRQ_TYPE_LEVEL_HIGH 7>,
+					     <69 IRQ_TYPE_LEVEL_HIGH 7>,
+					     <70 IRQ_TYPE_LEVEL_HIGH 7>;
+				interrupt-controller;
+				#interrupt-cells = <2>;
+				gpio-controller;
+				#gpio-cells = <2>;
+				clocks = <&pioA_clk>;
+			};
 		};
 	};
 };