hwmon: Fix SENSORS_TMP102 dependencies to eliminate build errors

hwmon: Fix SENSORS_TMP102 dependencies to eliminate build errors

Similar to what was done for the lm75 driver.

Add depends on THERMAL since that is what provides the
register/unregister functions above, but only if THERMAL_OF was
selected as this is an optional feature of the driver.

Signed-off-by: Jean Delvare <[email protected]>
Cc: Randy Dunlap <[email protected]>
Acked-by: Eduardo Valentin <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>