PM: domains: Mark fwnodes when their powerdomain is added/removed

This allows fw_devlink to recognize power domain drivers that don't use
the device-driver model to initialize the device. fw_devlink will use
this information to make sure consumers of such power domain aren't
indefinitely blocked from probing, waiting for the power domain device
to appear and bind to a driver.

Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210205222644.2357303-8-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/power/domain.c

@@ -2164,6 +2164,7 @@ static int genpd_add_provider(struct device_node *np, genpd_xlate_t xlate,
 	cp->node = of_node_get(np);
 	cp->data = data;
 	cp->xlate = xlate;
+	fwnode_dev_initialized(&np->fwnode, true);
 
 	mutex_lock(&of_genpd_mutex);
 	list_add(&cp->link, &of_genpd_providers);
@@ -2353,6 +2354,7 @@ void of_genpd_del_provider(struct device_node *np)
 				}
 			}
 
+			fwnode_dev_initialized(&cp->node->fwnode, false);
 			list_del(&cp->link);
 			of_node_put(cp->node);
 			kfree(cp);