Add device_info to Daikin (#19372)

* add device_info to Daikin

* Use the constant CONNECTION_NETWORK_MAC from the device registry helper.

homeassistant/components/sensor/daikin.py

@@ -104,3 +104,8 @@ class DaikinClimateSensor(Entity):
     def update(self):
         """Retrieve latest state."""
         self._api.update()
+
+    @property
+    def device_info(self):
+        """Return a device description for device registry."""
+        return self._api.device_info