The 'caps' variable has been defined in cppc_cpufreq_khz_to_perf() and
cppc_cpufreq_perf_to_khz() routines, so there is no need to get
'highest_perf' value through 'cpu->caps.highest_perf', we can use
'caps->highest_perf' instead.
Signed-off-by: NXin Hao <xhao@linux.alibaba.com>
[ Viresh: Updated commit log ]
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>