[DTBO][D18][E83] Add GPIO names to baseboard GPIO expander

arch/arm64/boot/dts/seco/overlays/seco-imx8mp-d18-mv-overlay.dts

@@ -147,6 +147,9 @@
 		reset-gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
 		*/
 		status = "okay";
+
+		gpio-line-names = "IO5", "IO6", "IO7", "IO8",
+				  "IO9", "IO13", "SINK#", "FLT_IOVCC#";
 	};
 
 	temp: lm75b@49 {