scsi: ufs-qcom: add printouts of testbus debug registers

This change adds printouts of testbus and debug registers.

Reviewed-by: Gilad Broner <gbroner@codeaurora.org>
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>