ARM: chronic-hotplug is born

Right now this pretty much a clone of KT auto hotplug with a sysfs module
that displays and allows you to change the enable_load thresholds.

It can be found in /sys/devices/system/cpu/cpufreq/chhronic_hotplug/
named "enable_core_thresholds"

Format is as follows:

"X X X X" each number being core 0,1,2,3 any value from 10 to 990 is valid
for each integer.

The numbers are derived from cpu load * 10

an example would be:

echo " 0 249 340 0" > /sys/devices/system/cpu/cpufreq/chronic_hotplug/enable_core_thresholds

Change-Id: If2f2e0948baad37e302bd92f563dc1b18f4848e2
Signed-off-by: Matt Filetto <matt.filetto@gmail.com>

Conflicts:
	arch/arm/configs/msm8974_sec_defconfig