scsi: ufs: ufs-exynos: Move setting the the DMA alignment to the init method

scsi: ufs: ufs-exynos: Move setting the the DMA alignment to the init method

Use the SCSI host's dma_alignment field and set it in ->init and remove the
now unused config_scsi_dev method.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240409143748.980206-9-hch@lst.de
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>