ATA ident command

[Chris Johns]

Joel Sherrill wrote:
> And don't forget the other thing about long lurking bugs.
> It seems that multiple people often trip them independently
> about the same time.  10 year old code with no reports suddenly
> gets a flurry. <sigh>
> 

I am now playing with the multi-block support in the ATA driver and I am 
having a few issues.

The ATA driver needs to be rewritten to remove the malloc/free, task, message 
queues and also the semaphore create and delete that happen on some (all?) 
requests.

Regards
Chris