spi: renesas,sh-msiof: Add r8a774e1 support

Document RZ/G2H (R8A774E1) SoC bindings.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1594811350-14066-15-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Mark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/spi/renesas,sh-msiof.yaml

@@ -38,6 +38,7 @@ properties:
               - renesas,msiof-r8a774a1      # RZ/G2M
               - renesas,msiof-r8a774b1      # RZ/G2N
               - renesas,msiof-r8a774c0      # RZ/G2E
+              - renesas,msiof-r8a774e1      # RZ/G2H
               - renesas,msiof-r8a7795       # R-Car H3
               - renesas,msiof-r8a7796       # R-Car M3-W
               - renesas,msiof-r8a77965      # R-Car M3-N