[Midnightbsd-cvs] src: sys/sys: Add constants required by the ata(4) import.

[laffer1 at midnightbsd.org]

Log Message:
-----------
Add constants required by the ata(4) import.

Modified Files:
--------------
    src/sys/sys:
        ata.h (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/sys/sys/ata.h?r1=1.5&r2=1.6)
        disk.h (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/sys/disk.h?r1=1.3&r2=1.4)