rockchip: rk3399: set fdtfile

Signed-off-by: NMark Kettenis <kettenis@openbsd.org>
Acked-by: NPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: NKlaus Goger <klaus.goger@theobroma-systems.com>
Reviewed-by: NPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>

include/configs/rk3399_common.h

@@ -59,6 +59,7 @@
 #include <config_distro_bootcmd.h>
 #define CONFIG_EXTRA_ENV_SETTINGS \
 	ENV_MEM_LAYOUT_SETTINGS \
+	"fdtfile=rockchip/" CONFIG_DEFAULT_DEVICE_TREE ".dtb\0" \
 	"partitions=" PARTS_DEFAULT \
 	BOOTENV