Kconfig: SLUB is the default slab allocator

In 2007, a0acd820 changed the default
slab allocator to SLUB, but the SLAB help text still says SLAB is the
default. This change fixes that.
Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>

init/Kconfig

@@ -771,8 +771,7 @@ config SLAB
 	help
 	  The regular slab allocator that is established and known to work
 	  well in all environments. It organizes cache hot objects in
-	  per cpu and per node queues. SLAB is the default choice for
-	  a slab allocator.
+	  per cpu and per node queues.
 
 config SLUB
 	bool "SLUB (Unqueued Allocator)"
@@ -781,7 +780,8 @@ config SLUB
 	   instead of managing queues of cached objects (SLAB approach).
 	   Per cpu caching is realized using slabs of objects instead
 	   of queues of objects. SLUB can use memory efficiently
-	   and has enhanced diagnostics.
+	   and has enhanced diagnostics. SLUB is the default choice for
+	   a slab allocator.
 
 config SLOB
 	depends on EMBEDDED