clk: renesas: Add R8A774B1 clock tables

This sync's the RZ/G2N clock tables with mainline linux 5.9 commit
bbf5c979011a ("Linux 5.9").

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 284e213..00a173b 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -55,6 +55,12 @@
         help
           Enable this to support the clocks on Renesas R8A774A1 SoC.
 
+config CLK_R8A774B1
+	bool "Renesas R8A774B1 clock driver"
+	depends on CLK_RCAR_GEN3
+	help
+	  Enable this to support the clocks on Renesas R8A774B1 SoC.
+
 config CLK_R8A7795
 	bool "Renesas R8A7795 clock driver"
 	depends on CLK_RCAR_GEN3