Revert "cpufreq: interactive: Remove the trace"

This reverts commit 7ba90896103d7c969f33da3ea80d600ec091974e.
Revert "cpufreq: interactive: Remove not used macros"

This reverts commit c05eff5731f9a3c4caa642c39aed156ef9ddd540.
Revert "cpufreq: interactive: Remove not used variables"

This reverts commit 42b31c258c8a7ae9570dc9e6ca506c4218137669.
Revert "cpufreq: interactive: sync android-3.0 with android-3.4"

This reverts commit b74142d1ba469771e7e9a0720d76ee125a09770d.