configs: Migrate RBTREE, LZO, CMD_MTDPARTS, CMD_UBI and CMD_UBIFS

The above CONFIG options are in Kconfig, and now have correct depends and
inter-dependencies.  Migrate these to configs/ from include/configs/.  In the
case of CMD_UBIFS also change it to be a default y if CMD_UBI.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/ap121_defconfig b/configs/ap121_defconfig
index 3e1f058..bd3d0da 100644
--- a/configs/ap121_defconfig
+++ b/configs/ap121_defconfig
@@ -22,6 +22,7 @@
 # CONFIG_CMD_FPGA is not set
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
+CONFIG_CMD_MTDPARTS=y
 # CONFIG_ISO_PARTITION is not set
 CONFIG_NET_RANDOM_ETHADDR=y
 CONFIG_DM_SPI_FLASH=y