arm64: dts: renesas: Add initial DTSI for RZ/G3E SoC

arm64: dts: renesas: Add initial DTSI for RZ/G3E SoC

Add the initial DTSI for the RZ/G3E SoC.
The files in this commit have the following meaning:
  - r9a09g047.dtsi:    RZ/G3E family SoC common parts
  - r9a09g047e57.dtsi: RZ/G3E R0A09G047E{4,5}{7,8} SoC specific parts
  - r9a09g047e37.dtsi: RZ/G3E R0A09G047E{2,3}{7,8} SoC specific parts

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20241203105005.103927-10-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>