Revert "cpufreq: import additional cpu governors from ChronicKernel"

This reverts commit 802702a6a30e7cbdf6fef6b5d2963dd7886799e8.
Fixes and tune-ups:

not sure 96mhz is really 96.  im a newb, but i think this frequency is hardcoded to 192mhz in clock-8x60.c
1836mhz needs to be 0x22 since 0x21*54 is actually 1782mhz
tuned voltages just to be safe.
tuned mpdecision to be a bit more responsive