Revert "cpufreq: Revert cpu-boost driver"

This reverts commit 9a91702af866c49f7681eeb06c5664b65857f962.
cpufreq: Disable cpu-boost by default

Disable cpu-boost by default, so that it can be turned ON only by
setting the module parameter boost_ms through command prompt when
required.

Change-Id: Ia9bc280892f65ed1d2e8051d1951e51922ad13db
Signed-off-by: Rohit Gupta <rohgup@codeaurora.org>