ARM: dts: imxrt1050-evk: move all u-boot, dm-spl to imxrt1050-evk-u-boot.dtsi file

At the moment a lot of u-boot,dm-spl properties are present in board .dts
file but this is not correct since u-boot,dm-spl property is u-boot
specific and must be listed into the separate imrt1050-evk-u-boot.dtsi
file. So let's move every u-boot,dm-spl property present in
imxrt1050-evk.dts to imxrt1050-evk-u-boot.dtsi file.

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
diff --git a/arch/arm/dts/imxrt1050-evk-u-boot.dtsi b/arch/arm/dts/imxrt1050-evk-u-boot.dtsi
index a4b50f0..3168c2d 100644
--- a/arch/arm/dts/imxrt1050-evk-u-boot.dtsi
+++ b/arch/arm/dts/imxrt1050-evk-u-boot.dtsi
@@ -8,8 +8,44 @@
 	chosen {
 		u-boot,dm-spl;
 	};
+
+	clocks {
+		u-boot,dm-spl;
+	};
+
+	soc {
+		u-boot,dm-spl;
+	};
 };
 
+&osc {
+	u-boot,dm-spl;
+};
+
+&clks {
+	u-boot,dm-spl;
+};
+
+&gpio1 {
+	u-boot,dm-spl;
+};
+
+&gpio2 {
+	u-boot,dm-spl;
+};
+
+&gpio3 {
+	u-boot,dm-spl;
+};
+
+&gpio4 {
+	u-boot,dm-spl;
+};
+
+&gpio5 {
+	u-boot,dm-spl;
+};
+
 &gpt1 {
 	u-boot,dm-spl;
 };
@@ -19,6 +55,8 @@
 };
 
 &semc {
+	u-boot,dm-spl;
+
 	bank1: bank@0 {
 		u-boot,dm-spl;
 	};
diff --git a/arch/arm/dts/imxrt1050.dtsi b/arch/arm/dts/imxrt1050.dtsi
index ec1eb88..1f28304 100644
--- a/arch/arm/dts/imxrt1050.dtsi
+++ b/arch/arm/dts/imxrt1050.dtsi
@@ -26,10 +26,7 @@
 	};
 
 	clocks {
-		u-boot,dm-spl;
-
 		osc: osc {
-			u-boot,dm-spl;
 			compatible = "fsl,imx-osc", "fixed-clock";
 			#clock-cells = <0>;
 			clock-frequency = <24000000>;
@@ -37,10 +34,7 @@
 	};
 
 	soc {
-		u-boot,dm-spl;
-
 		semc: semc@402f0000 {
-			u-boot,dm-spl;
 			compatible = "fsl,imxrt-semc";
 			reg = <0x402f0000 0x4000>;
 			clocks = <&clks IMXRT1050_CLK_SEMC>;
@@ -65,7 +59,6 @@
 		};
 
 		clks: ccm@400fc000 {
-			u-boot,dm-spl;
 			compatible = "fsl,imxrt1050-ccm";
 			reg = <0x400fc000 0x4000>;
 			interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
@@ -74,7 +67,6 @@
 		};
 
 		usdhc1: usdhc@402c0000 {
-			u-boot,dm-spl;
 			compatible = "fsl,imxrt-usdhc";
 			reg = <0x402c0000 0x10000>;
 			interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
@@ -87,7 +79,6 @@
 		};
 
 		gpio1: gpio@401b8000 {
-			u-boot,dm-spl;
 			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
 			reg = <0x401b8000 0x4000>;
 			interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>,
@@ -99,7 +90,6 @@
 		};
 
 		gpio2: gpio@401bc000 {
-			u-boot,dm-spl;
 			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
 			reg = <0x401bc000 0x4000>;
 			interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>,
@@ -111,7 +101,6 @@
 		};
 
 		gpio3: gpio@401c0000 {
-			u-boot,dm-spl;
 			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
 			reg = <0x401c0000 0x4000>;
 			interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
@@ -123,7 +112,6 @@
 		};
 
 		gpio4: gpio@401c4000 {
-			u-boot,dm-spl;
 			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
 			reg = <0x401c4000 0x4000>;
 			interrupts = <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>,
@@ -135,7 +123,6 @@
 		};
 
 		gpio5: gpio@400c0000 {
-			u-boot,dm-spl;
 			compatible = "fsl,imxrt-gpio", "fsl,imx35-gpio";
 			reg = <0x400c0000 0x4000>;
 			interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,