tracing: rename DEFINE_TRACE_FMT to just TRACE_FORMAT

There's been a bit confusion to whether DEFINE/DECLARE_TRACE_FMT should
be a DEFINE or a DECLARE. Ingo Molnar suggested simply calling it
TRACE_FORMAT.

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h
index 34ae464..3de09fa 100644
--- a/include/linux/tracepoint.h
+++ b/include/linux/tracepoint.h
@@ -153,7 +153,7 @@
 	synchronize_sched();
 }
 
-#define DEFINE_TRACE_FMT(name, proto, args, fmt)		\
+#define TRACE_FORMAT(name, proto, args, fmt)		\
 	DECLARE_TRACE(name, TPPROTO(proto), TPARGS(args))
 
 #endif