This is needed to allow the paging setup to probe for
IPA bit sizes to be used in p2m tables prior to iommu setup.
Acked-by: Ian Campbell <ian.campbell@citrix.com> Reviewed-by: Julien Grall <julien.grall@citrix.com> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>