soc: renesas: Add Renesas R8A7742 config option

Add configuration option for the RZ/G1H (R8A77420) SoC.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Link: https://lore.kernel.org/r/1588197415-13747-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

drivers/soc/renesas/Kconfig

@@ -83,6 +83,13 @@ config ARCH_R8A7740
 	select ARM_ERRATA_754322
 	select RENESAS_INTC_IRQPIN
 
+config ARCH_R8A7742
+	bool "RZ/G1H (R8A77420)"
+	select ARCH_RCAR_GEN2
+	select ARM_ERRATA_798181 if SMP
+	select ARM_ERRATA_814220
+	select SYSC_R8A7742
+
 config ARCH_R8A7743
 	bool "RZ/G1M (R8A77430)"
 	select ARCH_RCAR_GEN2