scsi: ufs: ufs-mediatek: Always add delays for VCC operations

MediaTek decides to always add delays before and after VCC is turned-off.

Link: https://lore.kernel.org/r/20220623035052.18802-3-stanley.chu@mediatek.com


Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>