arm64: dts: renesas: Add R8A78000 SoC support

arm64: dts: renesas: Add R8A78000 SoC support

Add initial support for the Renesas R-Car X5H (R8A78000) SoC.

Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Vinh Nguyen <vinh.nguyen.xz@renesas.com>
Signed-off-by: Minh Le <minh.le.aj@renesas.com>
Signed-off-by: Huy Bui <huy.bui.wm@renesas.com>
Signed-off-by: Khanh Le <khanh.le.xr@renesas.com>
Signed-off-by: Phong Hoang <phong.hoang.wz@renesas.com>
[Kuninori: tidyup for upstreaming]
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/87frcca3fn.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>