[SPARC64]: Fix kernel-debug config option dependencies.

arch/sparc64/Kconfig

@@ -808,16 +808,9 @@ config DEBUG_SPINLOCK
 	  best used in conjunction with the NMI watchdog so that spinlock
 	  deadlocks are also debuggable.
 
-# We have a custom atomic_dec_and_lock() implementation but it's not
-# compatible with spinlock debugging so we need to fall back on
-# the generic version in that case.
-config HAVE_DEC_LOCK
-	bool
-	depends on SMP && !DEBUG_SPINLOCK
-	default y
-
 config DEBUG_SPINLOCK_SLEEP
 	bool "Sleep-inside-spinlock checking"
+	depends DEBUG_KERNEL
 	help
 	  If you say Y here, various routines which may sleep will become very
 	  noisy if they are called with a spinlock held.	
@@ -844,8 +837,17 @@ config DEBUG_INFO
 	  If you don't debug the kernel, you can say N.
 	  
 config STACK_DEBUG
+	depends on DEBUG_KERNEL
 	bool "Stack Overflow Detection Support"
 
+# We have a custom atomic_dec_and_lock() implementation but it's not
+# compatible with spinlock debugging so we need to fall back on
+# the generic version in that case.
+config HAVE_DEC_LOCK
+	bool
+	depends on SMP && !DEBUG_SPINLOCK
+	default y
+
 config MCOUNT
 	bool
 	depends on STACK_DEBUG