ARM: dts: turris-omnia: Add GPIO key node for front button

Now that we have the MCU device-tree node, which acts as a GPIO
controller, add GPIO key node for the front button.

Signed-off-by: Marek Behún <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Reviewed-by: Conor Dooley <[email protected]>
Acked-by: Bartosz Golaszewski <[email protected]>
Acked-by: Alexandre Belloni <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>

Author: elkablo

arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts

@@ -112,6 +112,19 @@
 		status = "disabled";
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		front-button {
+			label = "Front Button";
+			linux,code = <KEY_VENDOR>;
+			linux,can-disable;
+			gpios = <&mcu 0 12 GPIO_ACTIVE_HIGH>;
+			/* debouncing is done by the microcontroller */
+			debounce-interval = <0>;
+		};
+	};
+
 	sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,name = "SPDIF";