Revert "all cpus should use same governors (thanks at maxwen :) )"

This reverts commit 6800f9a5dcf25b365787489ca20444e0adff6262.

	modified:   drivers/cpufreq/cpufreq.c
Revert "enable volume button wakeup"

This reverts commit 3fcec78c0dd20ebf555fb9929b9da6b76d3870e3.

	modified:   arch/arm/mach-tegra/board-enrc2b.c