cpufreq: revert CAF's cpu policy save code

this code does more harm than good

Signed-off-by: Paul Reioux <reioux@gmail.com>

Conflicts:
	drivers/cpufreq/cpufreq.c

Conflicts:
	drivers/cpufreq/cpufreq.c

Conflicts:
	drivers/cpufreq/cpufreq.c
cpufreq:intelliminmax:use generic get_cpu_idle_time solution and fixed arguments