sunxi: add support for Pine H64 board

Pine H64 is a SBC with Allwinner H6 SoC produced by Pine64. It features
1GiB/2GiB/4GiB(3GiB usable) DRAM, two USB 2.0 ports, one USB 3.0 port
and a mPCIE slot.

Add support for it.

The device tree is from Linux next-20180720.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 09adf5e..791ae01 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -390,6 +390,8 @@
 	sun50i-h5-orangepi-pc2.dtb \
 	sun50i-h5-orangepi-prime.dtb \
 	sun50i-h5-orangepi-zero-plus2.dtb
+dtb-$(CONFIG_MACH_SUN50I_H6) += \
+	sun50i-h6-pine-h64.dtb
 dtb-$(CONFIG_MACH_SUN50I) += \
 	sun50i-a64-amarula-relic.dtb \
 	sun50i-a64-bananapi-m64.dtb \