Remove make W=1 warnings

drivers/base/attribute_container.c:471: warning: Function parameter or
member 'cont' not described in
'attribute_container_add_class_device_adapter'

drivers/base/attribute_container.c:471: warning: Function parameter or
member 'dev' not described in
'attribute_container_add_class_device_adapter'

drivers/base/attribute_container.c:471: warning: Function parameter or
member 'classdev' not described in
'attribute_container_add_class_device_adapter'
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20210331232614.304591-3-pierre-louis.bossart@linux.intel.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>