rockchip: rk3368: Add PX5 Evaluation board

PX5 EVB is designed by Rockchip for automotive field
with integrated CVBS (TP2825) / MIPI DSI / CSI / LVDS
HDMI video input/output interface, audio codec ES8396,
WIFI / BT (on RTL8723BS), Gsensor BMA250E and light&proximity
sensor STK3410.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 51e21bc..cbfe17d 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -43,6 +43,7 @@
 	rk3328-evb.dtb \
 	rk3368-sheep.dtb \
 	rk3368-geekbox.dtb \
+	rk3368-px5-evb.dtb \
 	rk3399-evb.dtb \
 	rk3399-firefly.dtb \
 	rk3399-puma.dtb