ARM: dts: ti/omap: omap4-epson-embt2ws: add powerbutton

There is a power button connected to the PMIC, so describe it to be able
to power off the device in a convenient manner.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Link: https://patch.msgid.link/20251106-twl6030-button-v4-3-fdf1aa6e1e9a@kernel.org
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Author: akemnade

arch/arm/boot/dts/ti/omap/omap4-epson-embt2ws.dts

@@ -229,6 +229,11 @@
 			interrupts = <11>;
 		};
 
+		pwrbutton {
+			compatible = "ti,twl6030-pwrbutton";
+			interrupts = <0>;
+		};
+
 		ldo2: regulator-ldo2 {
 			compatible = "ti,twl6032-ldo2";
 			regulator-min-microvolt = <1000000>;