i2c: rcar_iic: Allow IIC on RCar Gen2

The IIC on Gen2 is compatible with this driver as well, allow it.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

drivers/i2c/Kconfig

@@ -178,7 +178,7 @@ endif
 
 config SYS_I2C_RCAR_IIC
 	bool "Renesas RCar Gen3 IIC driver"
-	depends on RCAR_GEN3 && DM_I2C
+	depends on (RCAR_GEN3 || RCAR_GEN2) && DM_I2C
 	help
 	  Support for Renesas RCar Gen3 IIC controller.