clk: renesas: Add Gen2 clock core

Add common clock code for Renesas RCar Gen2 platforms.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index d805f8b..a7aa565 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -4,6 +4,13 @@
 	help
 	  Enable support for clock present on Renesas RCar SoCs.
 
+config CLK_RCAR_GEN2
+	bool "Renesas RCar Gen2 clock driver"
+	def_bool y if RCAR_32
+	depends on CLK_RENESAS
+	help
+	  Enable this to support the clocks on Renesas RCar Gen2 SoC.
+
 config CLK_RCAR_GEN3
 	bool "Renesas RCar Gen3 clock driver"
 	def_bool y if RCAR_GEN3