dreambox-image: tiny change in ROOTFS_POSTPROCESS_COMMAND
dreambox-image: tiny change in ROOTFS_POSTPROCESS_COMMAND

no functional change but makes it a little less complicated to extend it.

YtvwlD/od-oe,demsey/openenigma2,JrCs/opendreambox,demsey/openenigma2,demsey/openembedded,JrCs/opendreambox,demsey/openenigma2,popazerty/openembedded-cuberevo,popazerty/openembedded-cuberevo,popazerty/openembedded-cuberevo,YtvwlD/od-oe,demsey/openembedded,popazerty/openembedded-cuberevo,JrCs/opendreambox,JrCs/opendreambox,demsey/openembedded,demsey/openembedded,demsey/openenigma2,JrCs/opendreambox,YtvwlD/od-oe,popazerty/openembedded-cuberevo,YtvwlD/od-oe,JrCs/opendreambox,YtvwlD/od-oe,demsey/openenigma2,popazerty/openembedded-cuberevo,demsey/openembedded,demsey/openembedded,popazerty/openembedded-cuberevo,YtvwlD/od-oe,JrCs/opendreambox,YtvwlD/od-oe,demsey/openenigma2,demsey/openembedded,JrCs/opendreambox,JrCs/opendreambox,demsey/openenigma2,popazerty/openembedded-cuberevo,YtvwlD/od-oe