ARM: dts: exynos: Cleanup Odroid-X2 and enable sound on Odroid-X

Odroid-X2 differs from Odroid-X only in RAM and prime CPU.
Remove doubled nodes from exynos4412-odroidx2.dts and move
sound node to exynos4412-odroidx.dts to enable sound on both boards.
Signed-off-by: Markus Reichl <m.reichl@fivetechno.de>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

arch/arm/boot/dts/exynos4412-odroidx.dts

@@ -100,3 +100,16 @@ &serial_2 {
 &serial_3 {
 	status = "okay";
 };
+
+&sound {
+	simple-audio-card,name = "Odroid-X";
+	simple-audio-card,widgets =
+		"Headphone", "Headphone Jack",
+		"Microphone", "Mic Jack",
+		"Microphone", "DMIC";
+	simple-audio-card,routing =
+		"Headphone Jack", "HPL",
+		"Headphone Jack", "HPR",
+		"IN1", "Mic Jack",
+		"Mic Jack", "MICBIAS";
+};

arch/arm/boot/dts/exynos4412-odroidx2.dts

@@ -22,27 +22,3 @@ memory@40000000 {
 		reg = <0x40000000 0x7FF00000>;
 	};
 };
-
-/* VDDQ for MSHC (eMMC card) */
-&buck8_reg {
-	regulator-name = "BUCK8_VDDQ_MMC4_2.8V";
-	regulator-min-microvolt = <2800000>;
-	regulator-max-microvolt = <2800000>;
-};
-
-&mshc_0 {
-	vqmmc-supply = <&buck8_reg>;
-};
-
-&sound {
-	simple-audio-card,name = "Odroid-X2";
-	simple-audio-card,widgets =
-		"Headphone", "Headphone Jack",
-		"Microphone", "Mic Jack",
-		"Microphone", "DMIC";
-	simple-audio-card,routing =
-		"Headphone Jack", "HPL",
-		"Headphone Jack", "HPR",
-		"IN1", "Mic Jack",
-		"Mic Jack", "MICBIAS";
-};