This patch implements the necessary logic to bring an Opal
enabled drive out of a factory-enabled into a working
Opal state.

This patch set also enables logic to save a password to
be replayed during a resume from suspend.
Signed-off-by: NScott Bauer <scott.bauer@intel.com>
Signed-off-by: NRafael Antognolli <Rafael.Antognolli@intel.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NJens Axboe <axboe@fb.com>