hwmon: (it87) Allow for chips with only 4 temp sensors

Some chips are known to only have 4 temperature sensors and there is no
requirement to test for more.  Currently only the IT8622E fits this
category.

Signed-off-by: Frank Crawford <frank@crawford.emu.id.au>
Link: https://lore.kernel.org/r/20230430045032.1723288-1-frank@crawford.emu.id.au


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