drivers: gpio_sx1509b: update to use new GPIO API

Update driver code and board files to use new GPIO configuration flags
such as GPIO_ACTIVE_LOW. Also add implementation of new port_* driver
API.

Tested on external SX1509B breakout board and Thingy:52.

Signed-off-by: Peter Bigot <[email protected]>

Author: pabigot

CODEOWNERS

@@ -133,6 +133,7 @@
 /drivers/flash/*stm32*                    @superna9999
 /drivers/gpio/*ht16k33*                   @henrikbrixandersen
 /drivers/gpio/*stm32*                     @rsalveti @idlethread
+/drivers/gpio/*sx1509b*                   @pabigot
 /drivers/hwinfo/                          @alexanderwachter
 /drivers/i2s/i2s_ll_stm32*                @avisconti
 /drivers/ieee802154/                      @jukkar @tbursztyka

boards/arm/nrf52_pca20020/nrf52_pca20020.dts

@@ -34,15 +34,15 @@
 		compatible = "gpio-leds";
 		/* Lightwell RGB */
 		led0: led_0 {
-			gpios = <&sx1509b 5 0>;
+			gpios = <&sx1509b 5 GPIO_ACTIVE_LOW>;
 			label = "Green LED";
 		};
 		led1: led_1 {
-			gpios = <&sx1509b 6 0>;
+			gpios = <&sx1509b 6 GPIO_ACTIVE_LOW>;
 			label = "Blue LED";
 		};
 		led2: led_2 {
-			gpios = <&sx1509b 7 0>;
+			gpios = <&sx1509b 7 GPIO_ACTIVE_LOW>;
 			label = "Red LED";
 		};
 	};