msm: smd: Add __iomem modifier for volatile variables

Add __iomem modifiers for shared memory accesses to enable compilation
warnings and sparse analysis for improper usage of I/O memory.

Change-Id: I71a804f7028da48d26edb5b255f9067f14eeefb6
Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
3 files changed