scsi: ufs: qcom: Remove support for host controllers older than v2.0

The legacy platforms making use of host controllers older than version 2.0
are not supported in upstream. So there is no need to carry code to support
them.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20231208065902.11006-16-manivannan.sadhasivam@linaro.org


Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8775p-ride
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>