sunxi: Add support for OrangePi Zero2

OrangePi Zero2 is SBC based on Allwinner H616 with 1 GiB of RAM, SD card
support, gigabit ethernet, micro HDMI, WIFI, Bluetooth and 1 USB 2.0
port. It also has two GPIO headers which allows further peripherals to
be used.

The devicetree file is taken from v3 of the OrangePi Zero2 Linux
submission [1], which it's not yet merged.

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2021-January/632084.html

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index afae2d9..858b79a 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -617,6 +617,8 @@
 	sun50i-h6-orangepi-one-plus.dtb \
 	sun50i-h6-pine-h64.dtb \
 	sun50i-h6-tanix-tx6.dtb
+dtb-$(CONFIG_MACH_SUN50I_H616) += \
+	sun50i-h616-orangepi-zero2.dtb
 dtb-$(CONFIG_MACH_SUN50I) += \
 	sun50i-a64-amarula-relic.dtb \
 	sun50i-a64-bananapi-m64.dtb \