dts: gd32e103: add property to gpio.

add `gpio-controller` property to gpio node.

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

Author: feilongfl

dts/arm/gigadevice/gd32e10x/gd32e10x.dtsi

@@ -5,6 +5,7 @@
  */
 
 #include <arm/armv7-m.dtsi>
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	cpus {
@@ -118,6 +119,8 @@
 
 			gpioa: gpio@40010800 {
 				compatible = "gd,gd32-gpio";
+				gpio-controller;
+				#gpio-cells = <2>;
 				reg = <0x40010800 0x400>;
 				rcu-periph-clock = <0x602>;
 				status = "disabled";
@@ -126,6 +129,8 @@
 
 			gpiob: gpio@40010c00 {
 				compatible = "gd,gd32-gpio";
+				gpio-controller;
+				#gpio-cells = <2>;
 				reg = <0x40010c00 0x400>;
 				rcu-periph-clock = <0x603>;
 				status = "disabled";
@@ -134,6 +139,8 @@
 
 			gpioc: gpio@40011000 {
 				compatible = "gd,gd32-gpio";
+				gpio-controller;
+				#gpio-cells = <2>;
 				reg = <0x40011000 0x400>;
 				rcu-periph-clock = <0x604>;
 				status = "disabled";
@@ -142,6 +149,8 @@
 
 			gpiod: gpio@40011400 {
 				compatible = "gd,gd32-gpio";
+				gpio-controller;
+				#gpio-cells = <2>;
 				reg = <0x40011400 0x400>;
 				rcu-periph-clock = <0x605>;
 				status = "disabled";
@@ -150,6 +159,8 @@
 
 			gpioe: gpio@40011800 {
 				compatible = "gd,gd32-gpio";
+				gpio-controller;
+				#gpio-cells = <2>;
 				reg = <0x40011800 0x400>;
 				rcu-periph-clock = <0x606>;
 				status = "disabled";