scsi: ufs-qcom: add support for new vendor specific registers

The new UFS Controller (version 3.0.0) has a few changes compared to
previous versions, such as a new vendor specific register, and
different debug register offsets.

Change-Id: Idf455d2dcbdcdadcb1e809a8349fc9adbe9733dd
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>