Revert "Revert "msm_cpu_freq_limit: initial coding for controlling MSM quadcore cpus""

This reverts commit 6438b966a98c9efb40bf9043af1c918203eba111.
Revert "Revert "msm_cpu_freq_limit: fixed coding copy and paste error :p""

This reverts commit f0ac4d3955974bef7066bf2f64789394a75bae56.
Revert "Revert "cpufreq_limit: remove unused vars""

This reverts commit 84671db8606b5350af919e6db44f1eb48d19e89a.