dt-bindings: iio: imu: mpu6050: Add level shifter

Add a level shifter flag as found in ancient platform data struct:
level_shifter: 0: VLogic, 1: VDD
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
Link: https://lore.kernel.org/r/20230927173245.2151083-2-andreas@kemnade.infoSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/imu/invensense,mpu6050.yaml

@@ -48,6 +48,11 @@ properties:
 
   mount-matrix: true
 
+  invensense,level-shifter:
+    type: boolean
+    description: |
+      From ancient platform data struct: false: VLogic, true: VDD
+
   i2c-gate:
     $ref: /schemas/i2c/i2c-controller.yaml
     unevaluatedProperties: false