ufs: snapshot of UFS driver

This is a snapshot of UFS driver (host controller and PHY) taken as of
msm-4.4 commit <33ec44fb> ("cfg80211: Advertise extended capabilities per
interface type to userspace").

Snapshot is taken of following files:
	drivers/scsi/ufs/*
	drivers/phy/phy-qcom-ufs*
	drivers/phy/Makefile
	include/linux/phy/phy-qcom-ufs.h
	include/uapi/scsi/ufs/*
	include/trace/events/ufs.h
	Documentation/scsi/ufs.txt
	Documentation/devicetree/bindings/ufs/*

Fixed some of the minor compilation errrors after taking the snapshot.

Change-Id: Ica7946230a37329560ad1e4667436e584228934f
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>