iommu/msm: let iommu_map_range use all page sizes.

Use 16M, 1M, 64K or 4K iommu pages when physical
and virtual addresses are appropriately aligned.
This can reduce TLB misses when large buffers
are mapped.

Change-Id: Ic0dedbadeca18cf163eb4e42116e0573720ab4d2
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>