bitbake: hob: image size displayed wrong size in edit packages screen

bitbake: hob: image size displayed wrong size in edit packages screen

    size_str = '%.1f' % (size*1.0/(1024*1024)) + ' MB'
    from /bitbake/lib/bb/ui/crumbs/hobpages.py file transformed
    the size in MB. In our file it was again multiplied by 1024
    instead of doing a division by 1024, which brought a faulty size on
    the edit packages screen.

(Bitbake rev: 7dcea3884a45973ae332695dc8a53814b701151f)

Signed-off-by: Andrei Dinu <andrei.adrianx.dinu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>