hwmon: (max6697) fix Wvoid-pointer-to-enum-cast warning

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

  max6697.c:705:16: 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/20230810093157.94244-10-krzysztof.kozlowski@linaro.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Author: krzk

drivers/hwmon/max6697.c

@@ -702,7 +702,7 @@ static int max6697_probe(struct i2c_client *client)
 		return -ENOMEM;
 
 	if (client->dev.of_node)
-		data->type = (enum chips)of_device_get_match_data(&client->dev);
+		data->type = (uintptr_t)of_device_get_match_data(&client->dev);
 	else
 		data->type = i2c_match_id(max6697_id, client)->driver_data;
 	data->chip = &max6697_chip_data[data->type];