cpufreq: Add __init annotation to module init funcs

Add missing __init annotation to module init funcs.

Signed-off-by: Xiu Jianfeng <[e-mail]>
Signed-off-by: Viresh Kumar <[e-mail]>

drivers/cpufreq/highbank-cpufreq.c

···
 	.notifier_call = hb_cpufreq_clk_notify,
 };
 
-static int hb_cpufreq_driver_init(void)
+static int __init hb_cpufreq_driver_init(void)
 {
 	struct platform_device_info devinfo = { .name = "cpufreq-dt", };
 	struct device *cpu_dev;

drivers/cpufreq/sti-cpufreq.c

···
 	return 0;
 }
 
-static int sti_cpufreq_init(void)
+static int __init sti_cpufreq_init(void)
 {
 	int ret;
 

drivers/cpufreq/ti-cpufreq.c

···
 	return ret;
 }
 
-static int ti_cpufreq_init(void)
+static int __init ti_cpufreq_init(void)
 {
 	const struct of_device_id *match;