arm64: renesas: Add Renesas R8A77970 Kconfig support

Add a configuration option for the R-Car V3M SoC.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm64/Kconfig.platforms

@@ -184,6 +184,12 @@ config ARCH_R8A7796
 	help
 	  This enables support for the Renesas R-Car M3-W SoC.
 
+config ARCH_R8A77970
+	bool "Renesas R-Car V3M SoC Platform"
+	depends on ARCH_RENESAS
+	help
+	  This enables support for the Renesas R-Car V3M SoC.
+
 config ARCH_R8A77995
 	bool "Renesas R-Car D3 SoC Platform"
 	depends on ARCH_RENESAS