Removed label requirement, cause too many trouble on user
The 2nd SD Card partition will be mounted as sd-ext with ext3fs
(there are some problem with ext4, we stay on 3 until 4 problem
will be sorted)
Change-Id: I87e53d1714d84fbdafeb80599ebb3e62b3a24b1e
check for mmc device type = SD
mount sd-ext partition by label = sd-ext
we are smart, so only ext4 support
removed wait for device
Change-Id: Ie1ee2de3365d5515030d46801099418607e1265e