CPU: OC: MSM APQ8064 overclock up to 1620MHz (exp up to 1944MHz).

Add simple oc to franco kernel. Original code by Paul Reioux (faux123).

* Using CONFIG_EXTRA_OVERCLOCK needs CONFIG_SAFE_OVERCLOCK defined/enabled too.
* Safe freqs table (uses default power limit): 384/1620 MHz.
* Extra freqs (Unsafe, uses more power): 384/1944 MHz.
* Slightly raise boost voltages.
* Speed up only CORE table.
* Fix CAF addressed LGE bug https://github.com/faux123/mako/commit/a92107924d17bb9e8c31e4e22977285c9bacd743

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