Squashed: Fix battery drain

After applying the cpufreq cpu-boost driver commits,
all cpu cores are always online when i checked them.

This causes a really high battery drain.
As it harms more than it brings performance, lets
revert it.

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Revert "cpufreq: Add a sync limit to cpu-boost"

This reverts commit 35e64d6089f5ef5a808089596fb09a52a05be85c.

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Revert "cpufreq: Add cpu-boost driver"

This reverts commit 508832817d7af22f2c5415bac1853d9790d91a15.

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Change-Id: If14e21ccc64c390c2622b276a3b879c743b3c576