ARM: omapl138_lcdk: Enable DM_GPIO and DM and GPIO Commands

The da8xx GPIO driver is available with DM_GPIO support.  This
patch enables the CMD_GPIO, CMD_DM, and DM_GPIO and DA8XX_GPIO.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/configs/omapl138_lcdk_defconfig b/configs/omapl138_lcdk_defconfig
index 63ed4e7..bcb88ab 100644
--- a/configs/omapl138_lcdk_defconfig
+++ b/configs/omapl138_lcdk_defconfig
@@ -25,8 +25,8 @@
 CONFIG_CRC32_VERIFY=y
 # CONFIG_CMD_EEPROM is not set
 CONFIG_MX_CYCLIC=y
+CONFIG_CMD_DM=y
 # CONFIG_CMD_FLASH is not set
-# CONFIG_CMD_GPIO is not set
 CONFIG_CMD_NAND=y
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_CMD_MTDPARTS=y
@@ -40,6 +40,8 @@
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_DM=y
 CONFIG_SPL_DM=y
+CONFIG_DM_GPIO=y
+CONFIG_DA8XX_GPIO=y
 CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_DAVINCI=y
 CONFIG_DM_MMC=y