Low CPU Clocks: Allow ultra low CPU frequencies for better battery performance

while screen is on or background operations like audio books and music
* Modified for Krait 8960 SoC.

Change-Id: Iafb60d7083e14065a71e1c80b194ef5a823db3fb
Signed-off-by: faux123 <reioux@gmail.com>
Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>