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/jz4780/Makefile b/arch/mips/mach-jz47xx/jz4780/Makefile
new file mode 100644
index 0000000..5b3c354
--- /dev/null
+++ b/arch/mips/mach-jz47xx/jz4780/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0+
+
+obj-y := gpio.o jz4780.o pll.o reset.o sdram.o timer.o