openrd: Perform base CONFIG_DM enablement

As these boards support CONFIG_OF_CONTROL today, perform a basic
CONFIG_DM migration.

Cc: Stefan Roese <sr@denx.de>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/openrd_ultimate_defconfig b/configs/openrd_ultimate_defconfig
index d05ba7e..c149dba 100644
--- a/configs/openrd_ultimate_defconfig
+++ b/configs/openrd_ultimate_defconfig
@@ -10,6 +10,7 @@
 CONFIG_ENV_OFFSET=0x80000
 CONFIG_DEFAULT_DEVICE_TREE="kirkwood-openrd-ultimate"
 CONFIG_IDENT_STRING="\nOpenRD-Ultimate"
+# CONFIG_SYS_MALLOC_F is not set
 CONFIG_SYS_EXTRA_OPTIONS="BOARD_IS_OPENRD_ULTIMATE"
 CONFIG_BOOTDELAY=3
 CONFIG_USE_PREBOOT=y
@@ -37,6 +38,7 @@
 CONFIG_ENV_IS_IN_NAND=y
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_NETCONSOLE=y
+CONFIG_DM=y
 # CONFIG_MMC_HW_PARTITIONING is not set
 CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y