The image name shouldn't be passed from outside caller, since the image
name may not in the combobox list. Getting the name from
update_image_desc() internally.
(Bitbake rev: 6635cd7bc2a448d1324e9344100f97613f4272b5)
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>