On my iMac11,2 i have 3 fans that needs to be controlled, so this just
extens the current code to control the 3rd fan in the same way as the
first two.

It has also bin reported that the same problem exists on iMac8,1 too.

Without this patch, those models might overheat due to the fact that the
last fan isn't spun up on thermal load.


This bug report and patch was sent to the author of this code 1.5 years
ago, but no reaction have happened since then, so i send this to Debian
in the hope of having it included as a distro-patch so it automatically
ends up on my machines without having to patch the package manually, and
the patch doesn't get accidentally removed on package upgrade.


//Anton