scsi: ufs: host: mediatek: Handle broken RTC based on DTS setting

Introduce a mechanism to handle broken RTC by checking the DTS
setting. The configuration is specifically required for legacy platform.

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20250722030841.1998783-5-peter.wang@mediatek.com


Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>