imx: ventana: enable dm for MTD and NAND

Enable driver model for MTD and NAND support allowing us to remove
the iomux, init, and most of the static configuration.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
diff --git a/configs/gwventana_nand_defconfig b/configs/gwventana_nand_defconfig
index 533d31a..ea5ed05 100644
--- a/configs/gwventana_nand_defconfig
+++ b/configs/gwventana_nand_defconfig
@@ -87,8 +87,10 @@
 CONFIG_SUPPORT_EMMC_BOOT=y
 CONFIG_FSL_USDHC=y
 CONFIG_MTD=y
+CONFIG_DM_MTD=y
 CONFIG_MTD_RAW_NAND=y
 CONFIG_NAND_MXS=y
+CONFIG_NAND_MXS_DT=y
 CONFIG_PHYLIB=y
 CONFIG_E1000=y
 CONFIG_MII=y