dts: bindings: add DT binding for the Nintendo Nunchuk joystick

Add a binding for the Nintendo Nunchuk joystick through the I2C bus.

Signed-off-by: Miguel Gazquez <[email protected]>

Author: miggazElquez

dts/bindings/input/nintendo,nunchuk.yaml

@@ -0,0 +1,15 @@
+# Copyright (c) 2024 Bootlin
+# SPDX-License-Identifier: Apache-2.0
+
+description: Nintendo Nunchuk joystick through I2C
+
+compatible: "nintendo,nunchuk"
+
+include: i2c-device.yaml
+
+properties:
+  polling-interval-ms:
+    type: int
+    default: 50
+    description: |
+      Interval between two reads, in ms. The interval must be greater than 21 ms. Default to 50 ms.