increasing default readahead values
cpufreq: Introduce new relation for freq selection

Introduce CPUFREQ_RELATION_C for frequency selection.
It selects the frequency with the minimum euclidean distance
to target. In case of equal distance between 2 frequencies,
it will select the greater freq.

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
cpufreq: ondemand_eps: added new ondemand governor based on semaphore idea

Thanks a lot
@stratosk
https://github.com/stratosk/kernel_msm.git

Conflicts:
	drivers/cpufreq/Makefile