leds: 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.

Signed-off-by: Rob Herring <[e-mail]>
Cc: [e-mail]
Acked-by: Sakari Ailus <[e-mail]>
Acked-by: Pavel Machek <[e-mail]>
Signed-off-by: Jacek Anaszewski <[e-mail]>

drivers/leds/leds-as3645a.c

···
 		strlcpy(names->flash, name, sizeof(names->flash));
 	else
 		snprintf(names->flash, sizeof(names->flash),
-			 "%s:flash", node->name);
+			 "%pOFn:flash", node);
 
 	rval = of_property_read_u32(flash->flash_node, "flash-timeout-us",
 				    &cfg->flash_timeout_us);
···
 		strlcpy(names->indicator, name, sizeof(names->indicator));
 	else
 		snprintf(names->indicator, sizeof(names->indicator),
-			 "%s:indicator", node->name);
+			 "%pOFn:indicator", node);
 
 	rval = of_property_read_u32(flash->indicator_node, "led-max-microamp",
 				    &cfg->indicator_max_ua);