scsi: ufs: host: mediatek: Add debug information for Auto-Hibern8

Enhance the clock gating logic by adding debug information for the
Auto-Hibern8 (AHIT) register.  This additional logging aids in
troubleshooting by providing insights into the AHIT configuration when
the clock is not turned off as expected.

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20250811131423.3444014-4-peter.wang@mediatek.com


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>