cpufreq: centrino: Fix centrino_setpolicy() kerneldoc comment

The code is using centrino_target() rather than centrino_setpolicy().

Signed-off-by: dongjian <dongjian@yulong.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>