ata: pata_triflex: Repair some misnamed functions and fix some param descriptions

ata: pata_triflex: Repair some misnamed functions and fix some param descriptions

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

 drivers/ata/pata_triflex.c:143: warning: expecting prototype for triflex_dma_start(). Prototype was for triflex_bmdma_start() instead
 drivers/ata/pata_triflex.c:159: warning: Function parameter or member 'qc' not described in 'triflex_bmdma_stop'
 drivers/ata/pata_triflex.c:159: warning: expecting prototype for triflex_dma_stop(). Prototype was for triflex_bmdma_stop() instead

Cc: Jens Axboe <axboe@kernel.dk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Torben Mathiasen <torben.mathiasen@hp.com>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20210318085150.3131936-5-lee.jones@linaro.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>