ata: libata-transport: Fix some potential doc-rot issues

Fixes the following W=1 kernel build warning(s):

 drivers/ata/libata-transport.c:258: warning: Function parameter or member 'ap' not described in 'ata_tport_delete'
 drivers/ata/libata-transport.c:258: warning: Excess function parameter 'port' description in 'ata_tport_delete'
 drivers/ata/libata-transport.c:384: warning: Function parameter or member 'link' not described in 'ata_tlink_delete'
 drivers/ata/libata-transport.c:384: warning: Excess function parameter 'port' description in 'ata_tlink_delete'
 drivers/ata/libata-transport.c:640: warning: Function parameter or member 'ata_dev' not described in 'ata_tdev_delete'
 drivers/ata/libata-transport.c:640: warning: Excess function parameter 'port' description in 'ata_tdev_delete'

Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>