arm: add auto hotplug and limit boot frequency.
This adds Will Tisdale's auto_hotplug V.220, also limited boot frequency to 1958Mhz for a stable kernel.
Still experimental and will slowly observe and make changes on it as it goes.

Initial Adaptation for the Samsung Galaxy S5

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>
Enable auto hotplug and BFQ scheduler
Made small changes to auto_hotplug.c to prevent MISMATCH errors.

CHANGES:
added __cpuinit to current changed files.

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>