arm64: dts: renesas: r9a07g043: Add SSI{1,2,3} nodes and fillup the SSI0 stub node

Add SSI{1,2,3} nodes and fillup the SSI0 stub node in RZ/G2UL
(R9A07G043) SoC DTSI.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20220425170530.200921-3-biju.das.jz@bp.renesas.com


Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>