scsi: ufs: host: mediatek: Add support for new platform with MMIO_OTSD_CTR

scsi: ufs: host: mediatek: Add support for new platform with MMIO_OTSD_CTR

Introduce support for a new UFS Mediatek platform by adding the
REG_UFS_UFS_MMIO_OTSD_CTRL register. This update includes checks for
legacy platforms and uses the new register to replace debug selection
and handle specific operations.  The changes ensure compatibility across
different hardware versions and prevent potential issues with debug
usage on newer platforms.

Additional updates include error logging improvements during link setup
for newer and legacy platforms, ensuring proper event logging and
debugging.

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Acked-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
Link: https://patch.msgid.link/20250924094527.2992256-8-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>