hwmon: (it87) Rename FEAT_CONF_NOEXIT to FEAT_NOCONF as more descriptive of requirement

Rename previous definitions to match the new information that they are
preinitialised as enabled and should not receive codes to enter or exit
configuration mode.

Signed-off-by: Frank Crawford <frank@crawford.emu.id.au>
Link: https://lore.kernel.org/r/20240428060653.2425296-2-frank@crawford.emu.id.au


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