dt-bindings: hwmon: (mr75203) add "moortec,ts-series" property

Add optional "moortec,ts-series" property to define the temperature
equation and coefficients that shall be used to convert the digital
output to value in milli-Celsius.
Supported series: 5 (default) and 6.

Series 5:
  T = G + H * (n / cal5 - 0.5) + J * F
Where: G = 60, H = 200, cal5 = 4094, J = -0.1, F = frequency clock in MHz

Series 6:
   T = G + H * (n / cal5 - 0.5)
Where: G = 57.4, H = 249.4, cal5 = 4096
Signed-off-by: Eliav Farber <farbere@amazon.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220908152449.35457-17-farbere@amazon.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml

@@ -91,6 +91,15 @@ properties:
       Each channel should not appear more than once.
     $ref: /schemas/types.yaml#/definitions/uint8-array
 
+  moortec,ts-series:
+    description:
+      Definition of the temperature equation and coefficients that shall be
+      used to convert the digital output to value in milli-Celsius.
+    minimum: 5
+    maximum: 6
+    default: 5
+    $ref: /schemas/types.yaml#/definitions/uint32
+
 required:
   - compatible
   - reg