configs: Migrate and re-enabled CONFIG_CMD_MTDPARTS

Now that CMD_UBI does not select CMD_MTDPARTS we need to make platforms
that had been enabling it turn it on by hand.  This exposed that we had
not yet migrated CMD_MTDPARTS fully, so do so now.

Fixes: 86dfa556d927 ("cmd: ubi: Remove useless call to mtdparts_init()")
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/wb45n_defconfig b/configs/wb45n_defconfig
index 28e862d..33591d7 100644
--- a/configs/wb45n_defconfig
+++ b/configs/wb45n_defconfig
@@ -23,9 +23,8 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
+CONFIG_CMD_MTDPARTS=y
 CONFIG_ENV_IS_IN_NAND=y
-CONFIG_MTD_PARTITIONS=y
-CONFIG_MTD_DEVICE=y
 CONFIG_NAND=y
 CONFIG_NAND_ATMEL=y
 CONFIG_LZMA=y