hwmon: (pmbus/ucd9000) fix Wvoid-pointer-to-enum-cast warning

'chip' is an enum, thus cast of pointer on 64-bit compile test with W=1
causes:

  ucd9000.c:591:10: error: cast to smaller integer type 'enum chips' from 'const void *' [-Werror,-Wvoid-pointer-to-enum-cast]

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230810093157.94244-14-krzysztof.kozlowski@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Author: krzk

drivers/hwmon/pmbus/ucd9000.c

@@ -588,7 +588,7 @@ static int ucd9000_probe(struct i2c_client *client)
 	}
 
 	if (client->dev.of_node)
-		chip = (enum chips)of_device_get_match_data(&client->dev);
+		chip = (uintptr_t)of_device_get_match_data(&client->dev);
 	else
 		chip = mid->driver_data;