Kconfig: FAULT_INJECTION can be selected only if LOCKDEP is enabled.

There is no prompt for STACKTRACE, so it is enabled only when 'select'ed.
FAULT_INJECTION depends on it, while LOCKDEP selects it. So FAULT_INJECTION
becomes visible in Kconfig only when LOCKDEP is enabled.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

lib/Kconfig.debug

@@ -399,8 +399,8 @@ config LKDTM
 
 config FAULT_INJECTION
 	bool "Fault-injection framework"
-	depends on DEBUG_KERNEL
-	depends on STACKTRACE
+	depends on DEBUG_KERNEL && STACKTRACE_SUPPORT
+	select STACKTRACE
 	select FRAME_POINTER
 	help
 	  Provide fault-injection framework.