dts: gd32e103: add exti support

add exti for gd32e103

Signed-off-by: YuLong Yao <[email protected]>

Author: feilongfl

dts/arm/gigadevice/gd32e10x/gd32e10x.dtsi

@@ -94,6 +94,20 @@
 			label = "AFIO";
 		};
 
+		exti: interrupt-controller@40010400 {
+			compatible = "gd,gd32-exti";
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			reg = <0x40010400 0x400>;
+			num-lines = <19>;
+			interrupts = <6 0>, <7 0>, <8 0>, <9 0>, <10 0>, <23 0>,
+				     <40 0>;
+			interrupt-names = "line0", "line1", "line2", "line3",
+					  "line4", "line5-9", "line10-15";
+			status = "okay";
+			label = "EXTI";
+		};
+
 		pinctrl: pin-controller@40010800 {
 			compatible = "gd,gd32-pinctrl-afio";
 			reg = <0x40010800 0x1c00>;