boards: st: nucleo_l152re: fix LED polarity in device tree

Fix incorrectly defined LED polarity (GPIO_ACTIVE_LOW → GPIO_ACTIVE_HIGH)
to match hardware schematic and ensure consistent GPIO API behavior.

Fixes: zephyrproject-rtos#87424
Link: https://www.st.com/en/evaluation-tools/nucleo-l152re.html#cad-resources

Signed-off-by: Roudy Dagher <[email protected]>

Author: rdagher

boards/st/nucleo_l152re/nucleo_l152re.dts

@@ -25,7 +25,7 @@
 	leds: leds {
 		compatible = "gpio-leds";
 		green_led_0: led_0 {
-			gpios = <&gpioa 5 GPIO_ACTIVE_LOW>;
+			gpios = <&gpioa 5 GPIO_ACTIVE_HIGH>;
 			label = "User LD2";
 		};
 	};