int __init centrino_init ( void);
Initializes the Enhanced SpeedStep support. Returns -ENODEV on unsupported devices, -ENOENT if there's no voltage table for this particular CPU model, -EINVAL on problems during initiatization, and zero on success.
This is quite picky. Not only does the CPU have to advertise the ``est'' flag in the cpuid capability flags, we look for a specific CPU model and stepping, and we need to have the exact model name in our voltage tables. That is, be paranoid about not releasing someone's valuable magic smoke.