git: AHCI - zero-pad ATAPI commands

[Matthew Dillon]

:    AHCI - zero-pad ATAPI commands
:    
:    * ATAPI commands sent via the SCSI layer which are less then 16 bytes
:      are now zero-padded to 16 bytes.  The SATA protocol itself just sends
:      the whole FIS, so no more or less data is being sent.  But extra bytes
:      will not be sent as zero.
:    
:    Discussed-with: "Alex Hornung" <ahornung at gmail.com>
    
    Doh.  I meant, extra bytes will NOW be sent as zero.

					-Matt