[CPUFREQ] Misc cleanups in ondemand.

Misc cleanups in ondemand. Should have zero functional impact.
Also adding Alexey as author.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
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