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

 drivers/ata/pata_hpt37x.c:283: warning: Function parameter or member 'mask' not described in 'hpt370_filter'
 drivers/ata/pata_hpt37x.c:301: warning: Function parameter or member 'mask' not described in 'hpt370a_filter'
 drivers/ata/pata_hpt37x.c:473: warning: expecting prototype for hpt370_bmdma_end(). Prototype was for hpt370_bmdma_stop() instead
 drivers/ata/pata_hpt37x.c:567: warning: expecting prototype for hpt37x_bmdma_end(). Prototype was for hpt37x_bmdma_stop() instead

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