dev_set_name: fix missing kernel-doc

Fix kernel-doc for new dev_set_name() function:

Warning(lin2626-rc5//drivers/base/core.c:767): No description found for parameter 'fmt'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/base/core.c

@@ -762,6 +762,7 @@ static void device_remove_class_symlinks(struct device *dev)
 /**
  * dev_set_name - set a device name
  * @dev: device
+ * @fmt: format string for the device's name
  */
 int dev_set_name(struct device *dev, const char *fmt, ...)
 {