cpufreq: tegra194: remove redundant AND with cpu_online_mask

Remove redundant 'AND' with cpu_online_mask as the policy->cpus always
contains only the currently online CPUs.

Suggested-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/lkml/20231003050019.a6mcchw2o2z2wkrh@vireshk-i7/
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
[ Viresh: Fix rebase conflict ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>