config: enable SIO & ZEN I/O schedulers
Revert "cpufreq: interactive: Modifying sync_freq implementation [Rohit Gupta]"

This reverts commit 91f87a03291c160ccb14020e8c17d78dd063ad36.
Revert "cpufreq: interactive: sync freq feature for interactive governor [Rohit Gupta]"

This reverts commit 04dee27e0c0d04328efa04f8995eb9b4a1e1d86b.