ARM: DT: stm32: move dma translation to board files

stm32f469-disco and stm32f429-eval boards use SDRAM start address remapping
(to @0) to boost performances. A DMA translation through "dma-ranges"
property was needed for other masters than the M4 CPU.
stm32f429-disco doesn't use remapping so doesn't need this DMA translation.
This patches moves this DMA translation definition from stm32f429 soc file
to board files.
Tested-by: Bruno Herrera <bruherrera@gmail.com>
Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32429i-eval.dts

@@ -66,6 +66,10 @@ aliases {
 		serial0 = &usart1;
 	};
 
+	soc {
+		dma-ranges = <0xc0000000 0x0 0x10000000>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		green {

arch/arm/boot/dts/stm32f429.dtsi

@@ -59,8 +59,6 @@ clk_hse: clk-hse {
 	};
 
 	soc {
-		dma-ranges = <0xc0000000 0x0 0x10000000>;
-
 		timer2: timer@40000000 {
 			compatible = "st,stm32-timer";
 			reg = <0x40000000 0x400>;
@@ -392,13 +390,11 @@ ethernet0: dwmac@40028000 {
 			st,syscon = <&syscfg 0x4>;
 			snps,pbl = <8>;
 			snps,mixed-burst;
-			dma-ranges;
 			status = "disabled";
 		};
 
 		usbotg_hs: usb@40040000 {
 			compatible = "snps,dwc2";
-			dma-ranges;
 			reg = <0x40040000 0x40000>;
 			interrupts = <77>;
 			clocks = <&rcc 0 29>;

arch/arm/boot/dts/stm32f469-disco.dts

@@ -64,6 +64,10 @@ memory {
 	aliases {
 		serial0 = &usart3;
 	};
+
+	soc {
+		dma-ranges = <0xc0000000 0x0 0x10000000>;
+	};
 };
 
 &clk_hse {