Change the API for make_ext4fs() to better match the user's needs

The current make_ext4fs() is renamed make_ext4fs_internal(), and a new
make_ext4fs() has a simplified interface that supports the needs of
recovery and updater packages that call it.

Change-Id: I9e897f1f442c7f5060f8623ea74c3cf6a9c023e4
3 files changed