cpufreq: Initialize cpufreq-dt driver earlier

This allows HW drivers that depend on cpufreq-dt to initialize earlier.
Signed-off-by: NAmit Kucheria <amit.kucheria@linaro.org>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NDaniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/353c745d4ca1feff600bd44154c01c013f185ca4.1571656015.git.amit.kucheria@linaro.org

drivers/cpufreq/cpufreq-dt-platdev.c

@@ -180,4 +180,4 @@ static int __init cpufreq_dt_platdev_init(void)
 			       -1, data,
 			       sizeof(struct cpufreq_dt_platform_data)));
 }
-device_initcall(cpufreq_dt_platdev_init);
+core_initcall(cpufreq_dt_platdev_init);