flounder: fix sdcard

The sdcard daemon is not starting because of a long failure chain
started by the /mnt/factory mountpoint not existing.  Move it
to /factory, so it can be used for /factory/factory.prop by init,
and create the mountpoint.

Change-Id: I3e0c1f96c129740c041d15cf19cbad0cc2783c4e
2 files changed