SLUB: SLUB_DEBUG must depend on SLUB

Otherwise people get asked about SLUB_DEBUG even if they have another
slab allocator enabled.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

init/Kconfig

diff --git a/init/Kconfig b/init/Kconfig
index e63a017..322b1f8 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -505,6 +505,7 @@
 config SLUB_DEBUG
 	default y
 	bool "Enable SLUB debugging support" if EMBEDDED
+	depends on SLUB
 	help
 	  SLUB has extensive debug support features. Disabling these can
 	  result in significant savings in code size. This also disables