dt-bindings: iio: temperature: ltc2983: describe matrix items

Give a little bit of information on what each item in the matrix is
supposed to be.

Also, some matrices put the 'minItems' and 'maxItems' keywords in the
wrong level. They should be on the same level as the 'items' keyword.
Fix it.

Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20221103130041.2153295-6-demonsingur@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Documentation/devicetree/bindings/iio/temperature/adi,ltc2983.yaml

@@ -126,8 +126,9 @@ patternProperties:
         minItems: 3
         maxItems: 64
         items:
-          minItems: 2
-          maxItems: 2
+          items:
+            - description: Voltage point in nV, signed.
+            - description: Temperature point in uK.
 
   "^diode@":
     type: object
@@ -249,12 +250,12 @@ patternProperties:
           resistance(ohm)-temperature(K). The entries added here are in uohm
           and uK. For more details values look at table 74 and 75.
         $ref: /schemas/types.yaml#/definitions/uint64-matrix
+        minItems: 3
+        maxItems: 64
         items:
-          minItems: 3
-          maxItems: 64
           items:
-            minItems: 2
-            maxItems: 2
+            - description: Resistance point in uOhms.
+            - description: Temperature point in uK.
 
     required:
       - adi,rsense-handle
@@ -328,8 +329,9 @@ patternProperties:
         minItems: 3
         maxItems: 64
         items:
-          minItems: 2
-          maxItems: 2
+          items:
+            - description: Resistance point in uOhms.
+            - description: Temperature point in uK.
 
       adi,custom-steinhart:
         description:
@@ -338,9 +340,8 @@ patternProperties:
           Steinhart sensors the coefficients are given in the raw
           format. Look at table 82 for more information.
         $ref: /schemas/types.yaml#/definitions/uint32-array
-        items:
-          minItems: 6
-          maxItems: 6
+        minItems: 6
+        maxItems: 6
 
     required:
       - adi,rsense-handle