msm: vidc: venus_boot: Rework non-secure PIL driver

Add checks for IOMMU presence around specific operations.
Set VBIF registers that are required when IOMMU is not
present. Use existing resources from vidc driver and avoid
duplication.

Change-Id: Id23a7a086ffe3ef8aa702560531c45b287b0be08
Signed-off-by: Sachin Shah <sachins@codeaurora.org>