iio: st_sensors: relax WhoAmI check in st_sensors_verify_id()

Hard matching against the WhoAmI values isn't ideal for using devices
which are compatible with existing ones. Instead of raising an error,
issue a warning instead, thus allowing the driver to continue probing.
Suggested-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Link: https://patch.msgid.link/20240625082800.62305-1-kauschluss@disroot.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/common/st_sensors/st_sensors_core.c

@@ -606,10 +606,9 @@ int st_sensors_verify_id(struct iio_dev *indio_dev)
 		}
 
 		if (sdata->sensor_settings->wai != wai) {
-			dev_err(&indio_dev->dev,
+			dev_warn(&indio_dev->dev,
 				"%s: WhoAmI mismatch (0x%x).\n",
 				indio_dev->name, wai);
-			return -EINVAL;
 		}
 	}