toradex: set default dhcp distroboot scriptname

Use the same name of DHCP Distroboot script as in regular eMMC case.

Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
diff --git a/include/configs/colibri_imx7.h b/include/configs/colibri_imx7.h
index 0382724..ff2c30c 100644
--- a/include/configs/colibri_imx7.h
+++ b/include/configs/colibri_imx7.h
@@ -140,6 +140,7 @@
 	MODULE_EXTRA_ENV_SETTINGS \
 	UBOOT_UPDATE \
 	"boot_file=zImage\0" \
+	"boot_script_dhcp=boot.scr\0" \
 	"bootubipart=ubi\0" \
 	"console=ttymxc0\0" \
 	"defargs=\0" \