overclocking: initial MSM S4-PRO overclocking to 1.89GHz

Signed-off-by: faux123 <reioux@gmail.com>

This cherry-pick aslo includes:

https://github.com/faux123/mako/commit/271dbf5bf6e9fc37ac0805b184eb322d35d1cc3f
https://github.com/faux123/mako/commit/b6553646bb4fec5bdc19d1252873b55d55d6a75a

And some changes made my dsb9938.