cpufreq: add hotplug governor

Signed-off-by: ptmr3 <ptmr323@gmail.com>

Conflicts:
	drivers/cpufreq/Makefile
cpufreq_hotplug: patch hotplug governor to use workqueues when enabling/disabling the second core
cpufreq_hotplug: make hotplug plug in/out more than one core depending on the load
power: Samsung factory limit workaround

This avoids userspace factory limit of the CPU frequency without breaking power savings mode.
Pegasus Overhaul
samsung-battery: Reduce battery-monitor wakelock timeouts