Add device tree binary to /boot

Used by the overlay function

Change-Id: Ie618610cf0f9567bddd8f8dceb4922a669ad774d
diff --git a/debian/rules b/debian/rules
index c75911b..b5532ec 100755
--- a/debian/rules
+++ b/debian/rules
@@ -43,6 +43,7 @@
 	cp System.map $(DESTDIR)/boot/System.map-$(VERSION)
 	cp .config $(DESTDIR)/boot/config-$(VERSION)
 	install -p -m 755 boot.img $(DESTDIR)/boot
+	cp arch/arm64/boot/dts/mediatek/mt8167-coral.dtb ${DESTDIR}/boot
 
 	install -d $(DESTDIR_HEADERS)/usr/src/linux-headers-$(VERSION)
 	install -d $(DESTDIR_HEADERS)/usr/src/linux-headers-$(VERSION)/arch/arm