imx6ul: opos6ul: add SPL_DM support

Since commit commit 152038ea1886 ("i.MX6UL: icore: Add SPL_OF_CONTROL
support") the OPOS6UL board doesn't boot anymore. Adding SPL_DM support
makes the board boot again.

Fixes: commit 152038ea1886 ("i.MX6UL: icore: Add SPL_OF_CONTROL support")
Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
diff --git a/configs/opos6uldev_defconfig b/configs/opos6uldev_defconfig
index a2735bc..2fd684a 100644
--- a/configs/opos6uldev_defconfig
+++ b/configs/opos6uldev_defconfig
@@ -1,8 +1,10 @@
 CONFIG_ARM=y
 CONFIG_ARCH_MX6=y
 CONFIG_SYS_TEXT_BASE=0x87800000
+CONFIG_SPL_GPIO_SUPPORT=y
 CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
+CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_TARGET_OPOS6ULDEV=y
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y
@@ -11,6 +13,8 @@
 CONFIG_SPL=y
 # CONFIG_CMD_BMODE is not set
 CONFIG_DEFAULT_DEVICE_TREE="imx6ul-opos6uldev"
+CONFIG_SPL_SYS_MALLOC_F_LEN=0x400
+CONFIG_TPL_SYS_MALLOC_F_LEN=0x400
 CONFIG_BOOTDELAY=5
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttymxc0,115200"
@@ -19,6 +23,7 @@
 CONFIG_SUPPORT_RAW_INITRD=y
 CONFIG_DEFAULT_FDT_FILE="imx6ul-opos6uldev.dtb"
 CONFIG_VERSION_VARIABLE=y
+CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_ENV_SUPPORT=y
 CONFIG_SPL_YMODEM_SUPPORT=y
 CONFIG_HUSH_PARSER=y