mips: jz47xx: Add Creator CI20 platform

Add support for the Creator CI20 platform based on the JZ4780 SoC.

Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Reviewed-by: Marek Vasut <marex@denx.de>
diff --git a/arch/mips/mach-jz47xx/Kconfig b/arch/mips/mach-jz47xx/Kconfig
index cd6944c..dcaac01 100644
--- a/arch/mips/mach-jz47xx/Kconfig
+++ b/arch/mips/mach-jz47xx/Kconfig
@@ -12,4 +12,15 @@
 	help
 	  Support for Ingenic JZ4780 family SoCs.
 
+choice
+	prompt "Board select"
+
+config TARGET_JZ4780_CI20
+	bool "Creator CI20 Reference Board"
+	select SOC_JZ4780
+
+endchoice
+
+source "board/imgtec/ci20/Kconfig"
+
 endmenu