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/at91sam9n12ek_nandflash_defconfig b/configs/at91sam9n12ek_nandflash_defconfig
index 08887c4..a1d6fd7 100644
--- a/configs/at91sam9n12ek_nandflash_defconfig
+++ b/configs/at91sam9n12ek_nandflash_defconfig
@@ -22,6 +22,7 @@
 CONFIG_CMD_DHCP=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_FAT=y
+CONFIG_CMD_MTDPARTS=y
 CONFIG_OF_CONTROL=y
 CONFIG_DM=y
 CONFIG_CLK=y