sysctl.h: add correct variable

Conflicts:
	include/linux/sysctl.h

Signed-off-by: renderbroken <zkennedy87@gmail.com>
cpuboost: Add hotplug boosting
If we decide to hotplug a core then we are making a strong
statement that we think that the system load is high.  Let's
have faith in our hotplug driver(s) and boost the cpufreq
when we are hotplugging cores.

[myfluxi: shorter boost, minor style changes]

Signed-off-by: renderbroken <zkennedy87@gmail.com>