scsi: ufs: Add support for disabling command queuing

Some devices, even though advertises command queuing capability,
may not behave well when multiple commands are queued concurrently.
Add support to disable command queuing for such devices

Change-Id: I914fb919c4e9d868533b50bd845eb09a5e635cb8
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>