cpufreq: dt: No need to allocate resources anymore

OPP layer manages it now and cpufreq-dt driver doesn't need it. But, we
still need to check for availability of resources for deferred probing.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
(cherry picked from commit dd02a3d920083b6cb0ee4f0eaf2c599b740bf5fe)
Signed-off-by: Alex Shi <alex.shi@linaro.org>