realtek: Switch ApresiaLightGS120GT-SS RTL8231 driver

Switch the implementation for the RTL8231 GPIO expander to the new
driver.

This allows specifying the GPIO driving the RTL8231's reset as a proper
MDIO reset line, so the gpio-hog can be dropped. Since it was pinned at
a high level, the reset line is actually active-low (i.e. high when not
in reset).

Since the GPIO used for the reset key is capable of hardware debouncing,
also add the (only supported) debounce interval of 100ms.

Signed-off-by: Sander Vanheule <sander@svanheule.net>

target/linux/realtek/dts/rtl8382_apresia_aplgs120gtss.dts

@@ -48,6 +48,9 @@
 		compatible = "gpio-keys-polled";
 		poll-interval = <20>;
 
+		pinctrl-names = "default";
+		pinctrl-0 = <&reset_key_debounce>;
+
 		reset {
 			label = "reset";
 			gpios = <&gpio1 33 GPIO_ACTIVE_LOW>;
@@ -61,13 +64,6 @@
 		open-source;
 	};
 
-	gpio1: rtl8231-gpio {
-		compatible = "realtek,rtl8231-gpio";
-		#gpio-cells = <2>;
-		gpio-controller;
-		indirect-access-bus-id = <0>;
-	};
-
 	i2c0: i2c-gpio-0 {
 		compatible = "i2c-gpio";
 		sda-gpios = <&gpio1 1 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
@@ -134,12 +130,30 @@
 	};
 };
 
-&gpio0 {
-	rtl8231_reset {
-		gpio-hog;
-		gpios = <1 GPIO_ACTIVE_HIGH>;
-		output-high;
-		line-name = "rtl8231-reset";
+&mdio_aux {
+	status = "okay";
+
+	reset-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+	reset-delay-us = <1000>;
+	reset-post-delay-us = <10000>;
+
+	gpio1: expander@0 {
+		compatible = "realtek,rtl8231";
+		reg = <0>;
+
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-ranges = <&gpio1 0 0 37>;
+
+		reset_key_debounce: reset-key-pins {
+			pins = "gpio33";
+			input-debounce = <100000>;
+		};
+
+		led-controller {
+			compatible = "realtek,rtl8231-leds";
+			status = "disabled";
+		};
 	};
 };