OPAL fixups

[Jens Axboe]

On 02/17/2017 05:59 AM, Christoph Hellwig wrote:
> Hi all,
> 
> this contains a few more OPAL-related fixups.  It tones down warnings a bit,
> allocates the OPAL-ѕpecific data structure in a separate dynamic allocation,
> checks for support of Security Send/Receive in NVMe before using them,
> and makes sure we re-discovery the security capabilities after each reset.

Applied 1-3, thanks.

-- 
Jens Axboe