Revert "Revert "Revert "cpufreq: interactive: Fix null pointer dereference in interactive governor"""

This reverts commit b84adbb7be50972049b5b3136461902ba084dac6.
Revert "git revert f88bf36f08Revert "Revert "cpufreq: interactive: Modifying sync_freq implementation"""

This reverts commit 17644e140d6919dd0595134ca6405597c3f373c9.
Revert "Revert "timer: optimize apply_slack()""

This reverts commit 0a10fc4af20ec6b07c0826c4ebdc71dc05842cb6.
Revert "Revert "ARM: fix "bad mode in ... handler" message for undefined instructions""

This reverts commit 6c4183531c59ebeba16a8f7e350cec22318c7663.
fix sound