ARM: dts: stm32: add exti support for stm32h743

This patch adds support of external interrupt (exti)
for stm32h743.
Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>

arch/arm/boot/dts/stm32h743.dtsi

@@ -227,6 +227,14 @@ mdma1: dma@52000000 {
 			dma-requests = <32>;
 		};
 
+		exti: interrupt-controller@58000000 {
+			compatible = "st,stm32h7-exti";
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			reg = <0x58000000 0x400>;
+			interrupts = <1>, <2>, <3>, <6>, <7>, <8>, <9>, <10>, <23>, <40>, <41>, <62>, <76>;
+		};
+
 		lptimer2: timer@58002400 {
 			#address-cells = <1>;
 			#size-cells = <0>;