ARM: dts: exynos: Add support for secondary DAI to Odroid XU4

This patch extends DAPM routing and adds secondary CPU DAI entry
to support the secondary audio PCM interface on Odroid XU4.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/boot/dts/exynos5422-odroidxu4.dts

@@ -33,6 +33,8 @@ sound: sound {
 		compatible = "samsung,odroid-xu3-audio";
 		model = "Odroid-XU4";
 
+		samsung,audio-routing = "I2S Playback", "Mixer DAI TX";
+
 		assigned-clocks = <&clock CLK_MOUT_EPLL>,
 				<&clock CLK_MOUT_MAU_EPLL>,
 				<&clock CLK_MOUT_USER_MAU_EPLL>,
@@ -58,7 +60,7 @@ sound: sound {
 				<196608000>;
 
 		cpu {
-			sound-dai = <&i2s0 0>;
+			sound-dai = <&i2s0 0>, <&i2s0 1>;
 		};
 
 		codec {