ARM: dts: stm32: Add usart2 support on stm32h743

This usart is used for console output on stm32h743i-disco board
Signed-off-by: NPatrice Chotard <patrice.chotard@st.com>
Signed-off-by: NAlexandre TORGUE <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32h743.dtsi

@@ -68,6 +68,14 @@
 
 		};
 
+		usart2: serial@40004400 {
+			compatible = "st,stm32f7-usart", "st,stm32f7-uart";
+			reg = <0x40004400 0x400>;
+			interrupts = <38>;
+			status = "disabled";
+			clocks = <&timer_clk>;
+		};
+
 		timer5: timer@40000c00 {
 			compatible = "st,stm32-timer";
 			reg = <0x40000c00 0x400>;