ARM: dts: exynos: Silence SATA PHY warning in Exynos5250

The SATA PHY in Exynos5250 SoCs has two interfaces and two device nodes:
1. sata-phy@12170000
2. i2c-9/i2c@38

The first node represents the actual SATA PHY device with phy-cells.

The second represents an additional I2C interface, needed by the driver
to communicate with the SATA PHY device.  It is not a PHY-provider in
the terms of dtschema so rename it to silence dtbs_check warning:

  arch/arm/boot/dts/exynos5250-arndale.dt.yaml: sata-phy@38: '#phy-cells' is a required property
    From schema: lib/python3.6/site-packages/dtschema/schemas/phy/phy-provider.yaml

This second device node is also a property of SoC, not a board so move
it there.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200902155733.20271-2-krzk@kernel.org

arch/arm/boot/dts/exynos5250-arndale.dts

@@ -542,11 +542,6 @@ &i2c_9 {
 	status = "okay";
 	samsung,i2c-sda-delay = <100>;
 	samsung,i2c-max-bus-freq = <40000>;
-
-	sata_phy_i2c: sata-phy@38 {
-		compatible = "samsung,exynos-sataphy-i2c";
-		reg = <0x38>;
-	};
 };
 
 &i2s0 {
@@ -618,6 +613,10 @@ &sata_phy {
 	samsung,exynos-sataphy-i2c-phandle = <&sata_phy_i2c>;
 };
 
+&sata_phy_i2c {
+	status = "okay";
+};
+
 &soc {
 	/*
 	 * For unknown reasons HDMI-DDC does not work with Exynos I2C

arch/arm/boot/dts/exynos5250-smdk5250.dts

@@ -326,11 +326,6 @@ &i2c_9 {
 	status = "okay";
 	samsung,i2c-sda-delay = <100>;
 	samsung,i2c-max-bus-freq = <40000>;
-
-	sata_phy_i2c: sata-phy@38 {
-		compatible = "samsung,exynos-sataphy-i2c";
-		reg = <0x38>;
-	};
 };
 
 &i2s0 {
@@ -382,6 +377,10 @@ &sata_phy {
 	samsung,exynos-sataphy-i2c-phandle = <&sata_phy_i2c>;
 };
 
+&sata_phy_i2c {
+	status = "okay";
+};
+
 &spi_1 {
 	status = "okay";
 	cs-gpios = <&gpa2 5 GPIO_ACTIVE_HIGH>;

arch/arm/boot/dts/exynos5250.dtsi

@@ -473,6 +473,12 @@ i2c_9: i2c@121d0000 {
 			clocks = <&clock CLK_SATA_PHYI2C>;
 			clock-names = "i2c";
 			status = "disabled";
+
+			sata_phy_i2c: sata-phy-i2c@38 {
+				compatible = "samsung,exynos-sataphy-i2c";
+				reg = <0x38>;
+				status = "disabled";
+			};
 		};
 
 		spi_0: spi@12d20000 {