ARM: dts: stm32: Add SDIO controller for stm32f746

stm32f746 embeds ARM_PL180 sdio IP, adds SDIO controller
nodes to allow MMC support.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32f746.dtsi

@@ -428,6 +428,28 @@ usart6: serial@40011400 {
 			status = "disabled";
 		};
 
+		sdio2: sdio2@40011c00 {
+			compatible = "arm,pl180", "arm,primecell";
+			arm,primecell-periphid = <0x00880180>;
+			reg = <0x40011c00 0x400>;
+			clocks = <&rcc 0 167>;
+			clock-names = "apb_pclk";
+			interrupts = <103>;
+			max-frequency = <48000000>;
+			status = "disabled";
+		};
+
+		sdio1: sdio1@40012c00 {
+			compatible = "arm,pl180", "arm,primecell";
+			arm,primecell-periphid = <0x00880180>;
+			reg = <0x40012c00 0x400>;
+			clocks = <&rcc 0 STM32F7_APB2_CLOCK(SDMMC1)>;
+			clock-names = "apb_pclk";
+			interrupts = <49>;
+			max-frequency = <48000000>;
+			status = "disabled";
+		};
+
 		syscfg: system-config@40013800 {
 			compatible = "syscon";
 			reg = <0x40013800 0x400>;