Add custom Mako Hotplug driver for onlining and offlining cores based on system load.

Conflicts:

	arch/arm/kernel/Makefile
mako_hotplug: online cpu1 on screen on to remove the lag

Ref: https://github.com/franciscofranco/mako/commit/d0bbd80e75f2ee7e33e3fc7329998f227e720a0e