include: Introduce required header files for SMEM driver

This is a snapshot of the required headers for the msm-smem driver
as of msm-4.4 commit <aaf356abef2> (Merge "scsi: ufs: add 2 lane
support").

In addition, fix coding style issues.

CRs-Fixed: 1059650
Change-Id: Id4a15b9a32e1ea98aa15ac8c899ea23e9ab9a325
Signed-off-by: Chris Lew <clew@codeaurora.org>