macintosh: Always export pmu_[un]register_sleep_notifier if CONFIG_PM set

This fixes a build error when building the pmac sound driver as a
module for 64-bit powermacs.

Signed-off-by: Paul Mackerras <[e-mail]>

drivers/macintosh/via-pmu.c

···
 	__list_add(&n->list, list->prev, list);
 	return 0;
 }
+EXPORT_SYMBOL(pmu_register_sleep_notifier);
 
 int
 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n)
···
 	n->list.next = NULL;
 	return 0;
 }
+EXPORT_SYMBOL(pmu_unregister_sleep_notifier);
 #endif /* CONFIG_PM */
 
 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
···
 EXPORT_SYMBOL(pmu_i2c_simple_read);
 EXPORT_SYMBOL(pmu_i2c_simple_write);
 #if defined(CONFIG_PM) && defined(CONFIG_PPC32)
-EXPORT_SYMBOL(pmu_register_sleep_notifier);
-EXPORT_SYMBOL(pmu_unregister_sleep_notifier);
 EXPORT_SYMBOL(pmu_enable_irled);
 EXPORT_SYMBOL(pmu_battery_count);
 EXPORT_SYMBOL(pmu_batteries);