dt-bindings: iio: dac: AD5570R fix bindings errors

Replaced num property with reg property, fixed errors
reported by dt-binding-check.

Fixes: ea52c212 ("dt-bindings: iio: dac: Add docs for AD5770R DAC")
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
[robh: Fix required property list, fix Fixes tag]
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/iio/dac/adi,ad5770r.yaml

@@ -49,93 +49,86 @@ properties:
       asserted during driver probe.
     maxItems: 1
 
-  channel0:
+  channel@0:
     description: Represents an external channel which are
       connected to the DAC. Channel 0 can act both as a current
       source and sink.
     type: object
 
     properties:
-      num:
+      reg:
         description: This represents the channel number.
-        items:
-          const: 0
+        const: 0
 
       adi,range-microamp:
           description: Output range of the channel.
           oneOf:
-            - $ref: /schemas/types.yaml#/definitions/int32-array
             - items:
-                - enum: [0 300000]
-                - enum: [-60000 0]
-                - enum: [-60000 300000]
+                - const: 0
+                - const: 300000
+            - items:
+                - const: -60000
+                - const: 0
+            - items:
+                - const: -60000
+                - const: 300000
 
-  channel1:
+  channel@1:
     description: Represents an external channel which are
       connected to the DAC.
     type: object
 
     properties:
-      num:
+      reg:
         description: This represents the channel number.
-        items:
-          const: 1
+        const: 1
 
       adi,range-microamp:
           description: Output range of the channel.
-          oneOf:
-            - $ref: /schemas/types.yaml#/definitions/uint32-array
-            - items:
-                - enum: [0 140000]
-                - enum: [0 250000]
+          items:
+            - const: 0
+            - enum: [ 140000, 250000 ]
 
-  channel2:
+  channel@2:
     description: Represents an external channel which are
       connected to the DAC.
     type: object
 
     properties:
-      num:
+      reg:
         description: This represents the channel number.
-        items:
-          const: 2
+        const: 2
 
       adi,range-microamp:
           description: Output range of the channel.
-          oneOf:
-            - $ref: /schemas/types.yaml#/definitions/uint32-array
-            - items:
-                - enum: [0 140000]
-                - enum: [0 250000]
+          items:
+            - const: 0
+            - enum: [ 55000, 150000 ]
 
 patternProperties:
   "^channel@([3-5])$":
     type: object
     description: Represents the external channels which are connected to the DAC.
     properties:
-      num:
+      reg:
         description: This represents the channel number.
-        items:
-          minimum: 3
-          maximum: 5
+        minimum: 3
+        maximum: 5
 
       adi,range-microamp:
           description: Output range of the channel.
-          oneOf:
-            - $ref: /schemas/types.yaml#/definitions/uint32-array
-            - items:
-                - enum: [0 45000]
-                - enum: [0 100000]
+          items:
+            - const: 0
+            - enum: [ 45000, 100000 ]
 
 required:
 - reg
-- diff-channels
-- channel0
-- channel1
-- channel2
-- channel3
-- channel4
-- channel5
+- channel@0
+- channel@1
+- channel@2
+- channel@3
+- channel@4
+- channel@5
 
 examples:
   - |
@@ -150,34 +143,36 @@ examples:
                         vref-supply = <&vref>;
                         adi,external-resistor;
                         reset-gpios = <&gpio 22 0>;
+                        #address-cells = <1>;
+                        #size-cells = <0>;
 
                         channel@0 {
-                                num = <0>;
-                                adi,range-microamp = <(-60000) 300000>;
+                                reg = <0>;
+                                adi,range-microamp = <0 300000>;
                         };
 
                         channel@1 {
-                                num = <1>;
+                                reg = <1>;
                                 adi,range-microamp = <0 140000>;
                         };
 
                         channel@2 {
-                                num = <2>;
+                                reg = <2>;
                                 adi,range-microamp = <0 55000>;
                         };
 
                         channel@3 {
-                                num = <3>;
+                                reg = <3>;
                                 adi,range-microamp = <0 45000>;
                         };
 
                         channel@4 {
-                                num = <4>;
+                                reg = <4>;
                                 adi,range-microamp = <0 45000>;
                         };
 
                         channel@5 {
-                                num = <5>;
+                                reg = <5>;
                                 adi,range-microamp = <0 45000>;
                         };
                 };