iio: pressure: hsc030pa: use signed type to hold div_64() result

Use signed type to variable holding the result given by div_s64().
Signed-off-by: Petre Rodan <petre.rodan@subdimension.ro>
Link: https://lore.kernel.org/r/20240211075645.28777-3-petre.rodan@subdimension.roSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/pressure/hsc030pa.c

@@ -406,7 +406,7 @@ int hsc_common_probe(struct device *dev, hsc_recv_fn recv)
 	struct hsc_data *hsc;
 	struct iio_dev *indio_dev;
 	const char *triplet;
-	u64 tmp;
+	s64 tmp;
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*hsc));