ARM: dts: stm32: Enable USB HS on stm32f746-disco

This patch enables USB HS on stm32f746-disco (Host mode).
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32f746-disco.dts

@@ -61,6 +61,12 @@ aliases {
 		serial0 = &usart1;
 	};
 
+	usbotg_hs_phy: usb-phy {
+		#phy-cells = <0>;
+		compatible = "usb-nop-xceiv";
+		clocks = <&rcc 0 STM32F7_AHB1_CLOCK(OTGHSULPI)>;
+		clock-names = "main_clk";
+	};
 };
 
 &clk_hse {
@@ -72,3 +78,12 @@ &usart1 {
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&usbotg_hs {
+	dr_mode = "host";
+	phys = <&usbotg_hs_phy>;
+	phy-names = "usb2-phy";
+	pinctrl-0 = <&usbotg_hs_pins_b>;
+	pinctrl-names = "default";
+	status = "okay";
+};