arm: dts: MediaTek: add device tree for MT7623

This adds device tree for MT7623 development board - Bananapi R2
Detailed hardware information for BPI-R2 which could be found on
http://wiki.banana-pi.org/Banana_Pi_BPI-R2.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Tested-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index c8e2645..c9bf445 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -564,6 +564,7 @@
 dtb-$(CONFIG_SOC_K3_AM6) += k3-am654-base-board.dtb k3-am654-r5-base-board.dtb
 
 dtb-$(CONFIG_ARCH_MEDIATEK) += \
+	mt7623n-bananapi-bpi-r2.dtb \
 	mt7629-rfb.dtb
 
 targets += $(dtb-y)