mips: jz47xx: Add JZ4780 SoC support

Add initial support for the Ingenic JZ47xx MIPS 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
new file mode 100644
index 0000000..cd6944c
--- /dev/null
+++ b/arch/mips/mach-jz47xx/Kconfig
@@ -0,0 +1,15 @@
+menu "Ingenic JZ47xx platforms"
+	depends on ARCH_JZ47XX
+
+config SYS_SOC
+	default "jz47xx"
+
+config SOC_JZ4780
+	bool
+	select SUPPORTS_LITTLE_ENDIAN
+	select SUPPORTS_CPU_MIPS32_R1
+	select SUPPORTS_CPU_MIPS32_R2
+	help
+	  Support for Ingenic JZ4780 family SoCs.
+
+endmenu