cpufreq: Break out early if freq equals to target_freq

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: create a helper function to get CPU utilization. Picked from @stratosk

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: export the cpu load across cores to the policy struct. On Performance governor let's emulate a constant 100% load (in this Kernel's case it will make all cores online, which is kinda the purpose of a performance governor isn't it?).

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>

Conflicts:
	drivers/cpufreq/cpufreq_interactive.c
	drivers/cpufreq/cpufreq_ondemand.c

Change-Id: I9380dcce212478ba7d14f066ed6d9ea455302250
cpufreq: bail early if target_freq == current.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
cpufreq: ondemand: Increase sync thread policy and priority

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
3.4.84

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>

Conflicts:
	Makefile
	drivers/ata/libata-core.c

Change-Id: Ief919b6749099e59c724264cc92416b5113037ea