iio: ssp: use PLATFORM_DEVID_NONE

Use PLATFORM_DEVID_NONE define instead of "-1" value because:
 - it brings some meaning,
 - it might point attention why auto device ID was not used.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200921204939.20341-1-krzk@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/common/ssp_sensors/ssp_dev.c b/drivers/iio/common/ssp_sensors/ssp_dev.c
index a94dbcf..1aee871 100644 (file)
--- a/drivers/iio/common/ssp_sensors/ssp_dev.c
+++ b/drivers/iio/common/ssp_sensors/ssp_dev.c
@@ -503,7 +503,8 @@ static int ssp_probe(struct spi_device *spi)
                return -ENODEV;
        }
 
-       ret = mfd_add_devices(&spi->dev, -1, sensorhub_sensor_devs,
+       ret = mfd_add_devices(&spi->dev, PLATFORM_DEVID_NONE,
+                             sensorhub_sensor_devs,
                              ARRAY_SIZE(sensorhub_sensor_devs), NULL, 0, NULL);
        if (ret < 0) {
                dev_err(&spi->dev, "mfd add devices fail\n");