configs: omapl138: Enable DM and DT

Enable Driver Model and Device-tree support for omapl138 board
in U-Boot. Also enable DM_SERIAL and DM_I2C.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/omapl138_lcdk_defconfig b/configs/omapl138_lcdk_defconfig
index 0a2af11..2c1bdb2 100644
--- a/configs/omapl138_lcdk_defconfig
+++ b/configs/omapl138_lcdk_defconfig
@@ -10,11 +10,11 @@
 CONFIG_SPL_MMC_SUPPORT=y
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_SPL_NAND_SUPPORT=y
+CONFIG_DEFAULT_DEVICE_TREE="da850-lcdk"
 CONFIG_BOOTDELAY=3
 CONFIG_LOGLEVEL=3
 CONFIG_VERSION_VARIABLE=y
 # CONFIG_DISPLAY_CPUINFO is not set
-# CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_SPL=y
 CONFIG_SPL_BOARD_INIT=y
@@ -28,9 +28,13 @@
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_DIAG=y
 CONFIG_CMD_UBI=y
+CONFIG_OF_CONTROL=y
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_BOOTP_DNS=y
+CONFIG_DM=y
+CONFIG_DM_I2C=y
+CONFIG_DM_I2C_COMPAT=y
 CONFIG_NAND=y
 CONFIG_SYS_NAND_BUSWIDTH_16BIT=y
 CONFIG_SYS_NAND_U_BOOT_LOCATIONS=y
@@ -39,6 +43,6 @@
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_DM_SERIAL=y
 CONFIG_SYS_NS16550=y
 CONFIG_DAVINCI_SPI=y
-CONFIG_OF_LIBFDT=y