Update iommu.h header file

Change-Id: I84fe52c00bcce3abf135ba26da5bbeabade0f649
Signed-off-by: Blake Leeper <deatheatergrim@gmail.com>
Update msm-kgsl.h

Change-Id: I9be4c470d34b6d9a512997aadd100fe2e9422f16
Signed-off-by: Blake Leeper <deatheatergrim@gmail.com>