Revert "arm64: mm: dma-mapping: Modify handling for S1 bypass initialization"

This reverts commit 099ee7c6.
This should be reverted, as it does not account for setting up
the DMA ops correctly for users of the legacy ARM IOMMU
interfaces.

Change-Id: Ica0c3efd4a4db36d3f8922d801ed3dad161ab716
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>