dt-bindings: hwmon: Document adt7475 bypass-attenuator property

Add documentation for the bypass-attenuator-in[0-4] property.
Signed-off-by: Logan Shaw <logan.shaw@alliedtelesis.co.nz>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/devicetree/bindings/hwmon/adt7475.yaml

@@ -39,6 +39,17 @@ properties:
   reg:
     maxItems: 1
 
+patternProperties:
+  "^adi,bypass-attenuator-in[0-4]$":
+    description: |
+      Configures bypassing the individual voltage input attenuator. If
+      set to 1 the attenuator is bypassed if set to 0 the attenuator is
+      not bypassed. If the property is absent then the attenuator
+      retains it's configuration from the bios/bootloader.
+    allOf:
+     - $ref: /schemas/types.yaml#/definitions/uint32
+     - enum: [0, 1]
+
 required:
   - compatible
   - reg
@@ -52,6 +63,8 @@ examples:
       hwmon@2e {
         compatible = "adi,adt7476";
         reg = <0x2e>;
+        adi,bypass-attenuator-in0 = <1>;
+        adi,bypass-attenuator-in1 = <0>;
       };
     };