hwmon: (ntc_thermistor) Merge platform data

Allocate one state container for the device: struct ntc_data.
Move all items from struct ntc_thermistor_platform_data into
this struct and simplify.

Cc: Peter Rosin <peda@axentia.se>
Cc: Chris Lesiak <chris.lesiak@licor.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211125020841.3616359-5-linus.walleij@linaro.org


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