Revert "cpufreq: update lpj only if frequency has changed"

This reverts commit 1b7b840114a024efdc1da8ec75b7de8d3b2a1a10.

Change-Id: I1d4217a9395c3e9b4f9b266e1ded6c9cbb1e993b
Merge branch 'cm-11.0' into kk_mkt