msm:rq_stats: Register for Cpufreq policy notification

Currently the load of the system is calculated using the max
frequency that is read during startup(It does not get updated
when the policy changes). As a result, the average load of the
system is incorrectly calculated and the system might not bring
the cpus online to manage the additional load. This
reduces the performance of the system.

To fix this issue, register rq_stats to receive cpufreq policy
notifications. Update the policy's max frequency when a
notification is received and use that value to calculate the load.

Change-Id: Icc78e28c736c170e198f723fd96c13dfb2dafe8a
Signed-off-by: Archana Sathyakumar <asathyak@codeaurora.org>
Signed-off-by: Anji Jonnala <anjir@codeaurora.org>
d2: Add CC_OPTIMIZE_FOR_PERF and ""_FOR_SPEED and more opts

Change-Id: I2af7808c70df7ab297b94be99b5be241f2375aca
Signed-off-by: bmc08gt <bmc08gt.teamb00sted@gmail.com>

Conflicts:

	Makefile
	arch/arm/configs/aokp_d2-cdma_defconfig
	arch/arm/configs/aokp_d2-gsm_defconfig