configs: toradex: enable missing fit options

Add missing support of FIT-images and enable a verbosity for
this feature.

Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
diff --git a/configs/colibri-imx6ull-emmc_defconfig b/configs/colibri-imx6ull-emmc_defconfig
index 0e7f29b..8c61617 100644
--- a/configs/colibri-imx6ull-emmc_defconfig
+++ b/configs/colibri-imx6ull-emmc_defconfig
@@ -13,6 +13,7 @@
 CONFIG_SYS_MEMTEST_END=0x88000000
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
 CONFIG_BOOTDELAY=1
 CONFIG_USE_PREBOOT=y
 CONFIG_PREBOOT="setenv fdtfile imx6ull-colibri${variant}-${fdt_board}.dtb"