rockchip: Add support for veyron-mickey (Chromebit)

This adds support for the Asus Chromebit, and RK3288-based device designed
to plug directly into an HDMI monitor. The device tree file comes from
Linux v4.8.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index a345018..fcbcdb5 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -31,6 +31,7 @@
 	rk3036-sdk.dtb \
 	rk3288-firefly.dtb \
 	rk3288-veyron-jerry.dtb \
+	rk3288-veyron-mickey.dtb \
 	rk3288-rock2-square.dtb \
 	rk3288-evb.dtb \
 	rk3288-fennec.dtb \