fpit and max X position for calibration

[Piotr Gluszenia Slawinski]

I've upgraded to xorg 1.8.2 and 1.2.4 fpit driver recently, and
it works, except it's X position is uncalibrated, and driver
seems to ignore settings passed to it in xorg.conf.

Xorg.log seems to show that those values are recognized, but they
are effectively ignored (no matter what one puts there, it's still same)



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