hwmon: (sht3x) set initial jiffies to last_update

Handling the wraparound requires the data->last_update to be set to an
initial jiffies value. Otherwise on 32-bit systems you will not be able
to request a reading till the 5 minute jiffies rollover happens.

Cc: Guenter Roeck <linux@roeck-us.net>
Cc: David Frey <david.frey@sensirion.com>
Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Fixes: 7c84f7f8 ("hwmon: add support for Sensirion SHT3x sensors")
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/sht3x.c

@@ -720,7 +720,7 @@ static int sht3x_probe(struct i2c_client *client,
 	data->setup.blocking_io = false;
 	data->setup.high_precision = true;
 	data->mode = 0;
-	data->last_update = 0;
+	data->last_update = jiffies - msecs_to_jiffies(3000);
 	data->client = client;
 	crc8_populate_msb(sht3x_crc8_table, SHT3X_CRC8_POLYNOMIAL);