ring-buffer: fix printk output

The warning output in trace_recursive_lock uses %d for a long when
it should be %ld.

[ Impact: fix compile warning ]

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 9692f10..f4cc590 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1491,7 +1491,7 @@
 	/* Disable all tracing before we do anything else */
 	tracing_off_permanent();
 
-	printk_once(KERN_WARNING "Tracing recursion: depth[%d]:"
+	printk_once(KERN_WARNING "Tracing recursion: depth[%ld]:"
 		    "HC[%lu]:SC[%lu]:NMI[%lu]\n",
 		    current->trace_recursion,
 		    hardirq_count() >> HARDIRQ_SHIFT,