hwmon: (nct7904) Fix incorrect SMI status register setting of LTD temperature and fan.

According to datasheet, the SMI status register setting of LTD
temperature is SMI_STS3, and the SMI status register setting
of fan is SMI_STS5 and SMI_STS6.

Signed-off-by: amy.shih <amy.shih@advantech.com.tw>
Link: https://lore.kernel.org/r/20190912113300.4714-1-Amy.Shih@advantech.com.tw


Signed-off-by: Guenter Roeck <linux@roeck-us.net>