avr32: Fix cpufreq oops when ondemand governor is default

Move the AP7 cpufreq init to late_initcall() so that we don't try to
bring up cpufreq until the governor is ready. x86 also uses
late_initcall() for this.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

arch/avr32/mach-at32ap/cpufreq.c

@@ -108,5 +108,4 @@ static int __init at32_cpufreq_init(void)
 {
 	return cpufreq_register_driver(&at32_driver);
 }
-
-arch_initcall(at32_cpufreq_init);
+late_initcall(at32_cpufreq_init);