Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>

Now that the other architecture-specific lib directories have been
moved out of the top-level directory there's not much reason to have the
'_generic' suffix on the common lib directory.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>

Now it's used at UBI module. Of course other modules can use it.
If you want to use it, please define CONFIG_RBTREE

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>