msm8960-common: Improve quality of jpeg pictures

Change-Id: I4385cfecf974f3962c4bdc5869280f010e841923
msm8960-common: power: Tuning and cleanups

 * Tune the governor for better power usage and interactivity
 * Reset tuning parameters if governor changes
 * Cleanup

Change-Id: I4e6638e2402e76e44b8804465a5e5be63f5b85f9