PM / Domains: export symbols to add/remove devices from genpd

Drivers which can be built as loadable module needs symbols
- pm_genpd_add_device/pm_genpd_remove_device to add/remove devices
to/from genpd. Those drivers create platform devices, which comes
under a powerdomain.

Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/base/power/domain.c

@@ -1252,6 +1252,7 @@ int __pm_genpd_add_device(struct generic_pm_domain *genpd, struct device *dev,
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(__pm_genpd_add_device);
 
 /**
  * pm_genpd_remove_device - Remove a device from an I/O PM domain.
@@ -1302,6 +1303,7 @@ int pm_genpd_remove_device(struct generic_pm_domain *genpd,
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(pm_genpd_remove_device);
 
 /**
  * pm_genpd_add_subdomain - Add a subdomain to an I/O PM domain.