dts: common: nordic: nrf54lm20a: Add missing gpio3 node and fix pin number

Add GPIO P3 and fix ngpios property in gpio nodes.

Signed-off-by: Krzysztof Chruściński <[email protected]>

Author: nordic-krch

dts/common/nordic/nrf54lm20a.dtsi

@@ -500,12 +500,23 @@
 				gpio-controller;
 				reg = <0xd8200 0x300>;
 				#gpio-cells = <2>;
-				ngpios = <16>;
+				ngpios = <32>;
 				status = "disabled";
 				port = <1>;
 				gpiote-instance = <&gpiote20>;
 			};
 
+			gpio3: gpio@d8600 {
+				compatible = "nordic,nrf-gpio";
+				gpio-controller;
+				reg = <0xd8600 0x300>;
+				#gpio-cells = <2>;
+				ngpios = <13>;
+				status = "disabled";
+				port = <3>;
+				gpiote-instance = <&gpiote20>;
+			};
+
 			gpiote20: gpiote@da000 {
 				compatible = "nordic,nrf-gpiote";
 				reg = <0xda000 0x1000>;
@@ -708,7 +719,7 @@
 				gpio-controller;
 				reg = <0x10a000 0x300>;
 				#gpio-cells = <2>;
-				ngpios = <5>;
+				ngpios = <10>;
 				status = "disabled";
 				port = <0>;
 				gpiote-instance = <&gpiote30>;