msm_turbo: initial coding for turbo boost on MSM architectures

adapted for 8974 arch

Signed-off-by: Paul Reioux <reioux@gmail.com>
msm_turbo: initial coding for turbo boost on MSM architectures (part 2)
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>