msm: iommu: Add an empty stub for function msm_iommu_get_ctx
msm: iommu: Add an empty stub for function msm_iommu_get_ctx

When IOMMU feature is turned off an empty stub for function
msm_iommu_get_ctx is required so that other modules using
this function may compile.

Signed-off-by: Shubhraprakash Das <af9cbceb8388e2170881d17f5ca88833c5c37ed6@codeaurora.org>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas