Some eMMC devices show special sub-devices such as mmcblk0boot0
etc. The installation script currently pick all of them up and
displays it to the user which makes some confusions because these
sub-devices are pretty small and complete installation including
rootfs won't be possible in most cases.
We simply now drop these sub-devices and only present the user
with the root of such mmc devices.
Signed-off-by: Awais Belal <awais_belal@mentor.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
