PM / wakeup: Unexport wakeup_source_sysfs_{add,remove}()

These functions are just used by the PM core, and that isn't modular so
these functions don't need to be exported. Drop the exports.

Fixes: c8377adf ("PM / wakeup: Show wakeup sources stats in sysfs")
Reviewed-by: Tri Vo <trong@android.com>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/base/power/wakeup_stats.c

@@ -182,7 +182,6 @@ int wakeup_source_sysfs_add(struct device *parent, struct wakeup_source *ws)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(wakeup_source_sysfs_add);
 
 /**
  * pm_wakeup_source_sysfs_add - Add wakeup_source attributes to sysfs
@@ -205,7 +204,6 @@ void wakeup_source_sysfs_remove(struct wakeup_source *ws)
 {
 	device_unregister(ws->dev);
 }
-EXPORT_SYMBOL_GPL(wakeup_source_sysfs_remove);
 
 static int __init wakeup_sources_sysfs_init(void)
 {