arm64: dts: ti: am654-base-board: Add gpio_keys node

There are 2 push buttons: SW5 and SW6 that are basically connected to
WKUP_GPIO0_24 and WKUP_GPIO0_27 respectively. Add the respective
nodes and the pinctrl data to set the mode to GPIO and Input.

Signed-off-by: Keerthy <j-keerthy@ti.com>

arch/arm64/boot/dts/ti/k3-am654-base-board.dts

@@ -6,6 +6,7 @@
 /dts-v1/;
 
 #include "k3-am654.dtsi"
+#include <dt-bindings/input/input.h>
 
 / {
 	compatible =  "ti,am654-evm", "ti,am654";
@@ -33,6 +34,25 @@
 			no-map;
 		};
 	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+		autorepeat;
+		pinctrl-names = "default";
+		pinctrl-0 = <&push_button_pins_default>;
+
+		sw5 {
+			label = "GPIO Key USER1";
+			linux,code = <BTN_0>;
+			gpios = <&wkup_gpio0 24 GPIO_ACTIVE_LOW>;
+		};
+
+		sw6 {
+			label = "GPIO Key USER2";
+			linux,code = <BTN_1>;
+			gpios = <&wkup_gpio0 27 GPIO_ACTIVE_LOW>;
+		};
+	};
 };
 
 &wkup_pmx0 {
@@ -42,6 +62,13 @@
 			AM65X_WKUP_IOPAD(0x00e4, PIN_INPUT, 0) /* (AD6) WKUP_I2C0_SDA */
 		>;
 	};
+
+	push_button_pins_default: push_button__pins_default {
+		pinctrl-single,pins = <
+			AM65X_WKUP_IOPAD(0x0030, PIN_INPUT, 7) /* (R5) WKUP_GPIO0_24 */
+			AM65X_WKUP_IOPAD(0x003c, PIN_INPUT, 7) /* (P2) WKUP_GPIO0_27 */
+		>;
+	};
 };
 
 &main_pmx0 {