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/cmd/Kconfig b/cmd/Kconfig
index 8766243..f18efc1 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1270,7 +1270,7 @@
 	depends on CMD_UBI
 	select CRC32
 	select LZO
-	default y if NAND_SUNXI
+	default y if CMD_UBI
 	help
 	  UBIFS is a file system for flash devices which works on top of UBI.