ARM: imx6: dh-imx6: Enable support for applying DTO

Enable DTO support to make it possible to boot fitImage with DTOs
embedded in them.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/configs/dh_imx6_defconfig b/configs/dh_imx6_defconfig
index 0a667fb..b8c0f86 100644
--- a/configs/dh_imx6_defconfig
+++ b/configs/dh_imx6_defconfig
@@ -4,6 +4,7 @@
 CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SYS_MALLOC_F_LEN=0x1000
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_SYS_MEMTEST_START=0x10000000
 CONFIG_SYS_MEMTEST_END=0x20000000
@@ -28,8 +29,8 @@
 CONFIG_DEFAULT_DEVICE_TREE="imx6q-dhcom-pdk2"
 CONFIG_AHCI=y
 CONFIG_DISTRO_DEFAULTS=y
-# CONFIG_SYS_MALLOC_F is not set
 CONFIG_FIT=y
+CONFIG_FIT_VERBOSE=y
 CONFIG_SPL_FIT=y
 # CONFIG_USE_SPL_FIT_GENERATOR is not set
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/spl_sd.cfg"
@@ -107,3 +108,4 @@
 CONFIG_WATCHDOG_TIMEOUT_MSECS=60000
 CONFIG_IMX_WATCHDOG=y
 CONFIG_BZIP2=y
+CONFIG_OF_LIBFDT_OVERLAY=y