[PATCH] NVMe: correct comment for offset enum of controller registers in nvme.h

[Sagi Grimberg]

> Section 3.1 gives the comment for the offset of controller registers
> in the specification 1.2a.
>
> Some are mis-copied in the header file nvme.h. Correct them.

Yep,

Reviewed-by: Sagi Grimberg <sagi at grimberg.me>