soc: renesas: Add RZ/N2H (R9A09G087) config option

Add a new Kconfig option, ARCH_R9A09G087, to enable ARM64 platform
support for the Renesas RZ/N2H SoC.

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/20250609203656.333138-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Author: prabhakarlad

drivers/soc/renesas/Kconfig

@@ -414,6 +414,12 @@ config ARCH_R9A09G077
 	help
 	  This enables support for the Renesas RZ/T2H SoC variants.
 
+config ARCH_R9A09G087
+	bool "ARM64 Platform support for RZ/N2H"
+	default y if ARCH_RENESAS
+	help
+	  This enables support for the Renesas RZ/N2H SoC variants.
+
 endif # ARM64
 
 if RISCV