scsi: ufs: ufs-qcom: Add support to dump testbus registers

Add support to dump testbus registers to enhance debugging capabilities
for the Qualcomm UFS Host Controller.

Signed-off-by: Manish Pandey <quic_mapa@quicinc.com>
Link: https://lore.kernel.org/r/20250411121345.16859-4-quic_mapa@quicinc.com


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