clk: renesas: Add R8A774A1 clock tables

This sync's the clock tables with the official release from
Linux 5.8-RC2 and update r8a774a1_mstp_table from Ref Manual
v1.00.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index e788178..284e213 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -48,6 +48,13 @@
 	help
 	  Enable this to support the clocks on Renesas RCar Gen3 SoC.
 
+config CLK_R8A774A1
+        bool "Renesas R8A774A1 clock driver"
+        def_bool y if R8A774A1
+        depends on CLK_RCAR_GEN3
+        help
+          Enable this to support the clocks on Renesas R8A774A1 SoC.
+
 config CLK_R8A7795
 	bool "Renesas R8A7795 clock driver"
 	depends on CLK_RCAR_GEN3