cpufreq.c: comment out trace_printks
fair.c: take a note about splitting the api
fair.c: uncomment to break the world
fair.c: comment out trace_printks
energy_model.c: rename from util_scale.c
cpufreq.h: add entry for CONFIG_CPU_FREQ_DEFAULT_GOV_ENERGY_MODEL
sched: Makefile: fix energy_model CONFIG option
energy_model: initial working implementation