UKSM 0.1.2.2
defconfig: enable UKSM
fs: USKM - add missing header file
cpufreq: enforce governor to stay in sync across CPU cores
This is a shameless port of work done by @elbermu along
with some small changes to clean up the code a bit.

This patch forces both CPU0 & CPU1 to stay on the same
policy governor.  Currently, CPU1 defaults to a seemingly
random governor (usually intellidemand) regardless of what
governor the user selects.

Change-Id: I448e452f2ce572309c5b9b405ae6f18d3de3d3a0
cpufreq: Only apply driver limits for scaling_min/max_freq writes When new values are written to scaling_min/max_freq sysfs files, the current code applies all the limits imposed by various ADJUST and INCOMPATIBLE notifiers handlers before storing them.

When the ADJUST and/or INCOMPATIBLE notifiers change their limits
frequently, this behavior makes it almost impossible for a
user/userspace process to store the scaling_min/max_freq limits
that go beyond the instantaneous limits imposed by the notifiers.
Since these sysfs nodes are typically meant to set limits that need
to be enforced for the foreseeable future, this is not a very user
friendly behavior.

So, change the behavior to only apply limits that are enforced by
the cpufreq driver. Typically, these are just the absolute limits
of the HW and don't change very often.

Change-Id: I1ccfaa2d1ee4ea595f882485d359dbdb407a0176
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>