Modify fan curve selection so that it only occurrs if
the same curve point is selected for 20+ sensor readings.
This prevents erroneous readings from ramping up the fans
for a short period
Previously on sensor failure, the highest fan curve point
would be used but automatic fan control would be enabled.
Change this to fall back to disable automatic fan control
so that sensor fds can be reset with SIGUSR2.
The Talos II schematic incorrectly labels CPU0's fan as CPUFAN1
and CPU1's fan as CPUFAN0. Account for this in the Talos zone map.