scsi: ufs: ufs-mediatek: Use device parameter initialization function

Use common device parameter initialization function instead of initializing
those parameters by vendor driver itself.

Link: https://lore.kernel.org/r/20201116065054.7658-4-stanley.chu@mediatek.com


Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>