scsi: ufs: call vendor specific setup_clocks during suspend/resume

Vendor specific ->setup_clocks might be implemented by some
drivers to get notified on the power change in the core driver.
Call these callbacks so that vendor specific operations can
further save power by turning off unused clocks during suspend.

Change-Id: I3dd456d1d03d9f83522897af641c4c96a10cefcd
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>