max1720x_battery: filtercfg adjustment by battery temperature

Implement feature of adjust filtercfg by temperature:
- filtercfg-temp: FLTERCFG change battery temperature criteria
- filtercfg-temp-hysteresis: temperature hysteresis
- filtercfg-default: default FLTERCFG value
- filtercfg-adjust: adjust value when tempertature lower than filtercfg-temp

Bug: 205852816
Signed-off-by: Jenny Ho <hsiufangho@google.com>
Change-Id: I76e936c599cf4287a789c6a063955d3a5df0b966