cpufreq: Initial CPU utilization should be 0

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Signed-off-by:
franciscofranco <franciscofranco.1990@gmail.com>

idea is taken here -
https://github.com/rmbq/android_kernel_htc_msm8960/commit/fc6570829a7394ce603c6cd881311af64fea17e3