ARM: at91/dt: sam9x5ek: add sound configuration

The sam9x5ek board has 2 jacks:
headphone wired on RHPOUT/LHPOUT of the wm8731
line in wired on LLINEIN/RLINEIN of the wm8731

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/boot/dts/at91sam9x5ek.dtsi

@@ -113,4 +113,19 @@
 			status = "okay";
 		};
 	};
+
+	sound {
+		compatible = "atmel,sam9x5-wm8731-audio";
+
+		atmel,model = "wm8731 @ AT91SAM9X5EK";
+
+		atmel,audio-routing =
+			"Headphone Jack", "RHPOUT",
+			"Headphone Jack", "LHPOUT",
+			"LLINEIN", "Line In Jack",
+			"RLINEIN", "Line In Jack";
+
+		atmel,ssc-controller = <&ssc0>;
+		atmel,audio-codec = <&wm8731>;
+	};
 };