iommu/ipmmu-vmsa: Hook up R8A774E1 DT matching code

Add support for RZ/G2H (R8A774E1) SoC IPMMUs.

Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1594722055-9298-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com


Signed-off-by: Joerg Roedel <jroedel@suse.de>