Revert "msm: rq_stats: Fix wrong usage of cpufreq_quick_get()"

This reverts commit 0f8787b5c0a1246fe731a78fc216c6b24572fbfb.
Revert "msm: rq_stats: Use cpufreq API to get the current frequency"

This reverts commit a15b1da6c791e6142c0afc425f6a71e70a4a8c92.