msm: kgsl: Implement function pointer to get the lsb of IOMMU pagetable

We need to get the lsb of the IOMMU pagetable when changing pagetables
in stream. Hence, implement a function pointer to get the lsb of IOMMU
pagetable that can be called from files other than kgsl_iommu.c

Change-Id: I33cfd5a029b1c302a2c947896f495f8706174573
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
3 files changed