hwmon: (sht4x) Add device tree match table

This patch enables automatic loading of the sht4x module via a device
tree table entry.

Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
Link: https://lore.kernel.org/r/20211121160637.2312106-1-davidm@egauge.net


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