sata_fsl: convert to command iterator

We need to iterate all commands, including the internal one,
for ATAPI error handling.

Fixes: 28361c403683 ("libata: add extra internal command")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Tejun Heo <tj@kernel.org>
1 file changed