lib/Kconfig: fix OBJAGG in lib/ menu structure

Keep the "Library routines" menu intact by moving OBJAGG into it.
Otherwise OBJAGG is displayed/presented as an orphan in the
various config menus.

Fixes: 0a020d4 ("lib: introduce initial implementation of object aggregation manager")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Ido Schimmel <idosch@mellanox.com>
Cc: David S. Miller <davem@davemloft.net>
Tested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

lib/Kconfig

@@ -631,6 +631,9 @@ config SBITMAP
 config PARMAN
 	tristate "parman" if COMPILE_TEST
 
+config OBJAGG
+	tristate "objagg" if COMPILE_TEST
+
 config STRING_SELFTEST
 	tristate "Test string functions"
 
@@ -653,6 +656,3 @@ config GENERIC_LIB_CMPDI2
 
 config GENERIC_LIB_UCMPDI2
 	bool
-
-config OBJAGG
-	tristate "objagg" if COMPILE_TEST