Update function response_cb of DeployImageDialog to get deploy process
return value. According the return value tell user that deploy image
successfully or not.
(Bitbake rev: f78f6d43a68e0f1dc4d3e4164eed453fcb9c22a8)
Signed-off-by: Kang Kai <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>