firmware: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.
Acked-by: NSudeep Holla <sudeep.holla@arm.com>
Signed-off-by: NRob Herring <robh@kernel.org>

drivers/firmware/scpi_pm_domain.c

@@ -121,7 +121,7 @@ static int scpi_pm_domain_probe(struct platform_device *pdev)
 
 		scpi_pd->domain = i;
 		scpi_pd->ops = scpi_ops;
-		sprintf(scpi_pd->name, "%s.%d", np->name, i);
+		sprintf(scpi_pd->name, "%pOFn.%d", np, i);
 		scpi_pd->genpd.name = scpi_pd->name;
 		scpi_pd->genpd.power_off = scpi_pd_power_off;
 		scpi_pd->genpd.power_on = scpi_pd_power_on;