tracing: Rename ftrace_event_{call,class} to trace_event_{call,class}

The name "ftrace" really refers to the function hook infrastructure. It
is not about the trace_events. The structures ftrace_event_call and
ftrace_event_class have nothing to do with the function hooks, and are
really trace_event structures. Rename ftrace_event_* to trace_event_*.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 32e76a2..8968bf7 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -278,7 +278,7 @@
 				unsigned long flags,
 				int pc)
 {
-	struct ftrace_event_call *call = &event_funcgraph_entry;
+	struct trace_event_call *call = &event_funcgraph_entry;
 	struct ring_buffer_event *event;
 	struct ring_buffer *buffer = tr->trace_buffer.buffer;
 	struct ftrace_graph_ent_entry *entry;
@@ -393,7 +393,7 @@
 				unsigned long flags,
 				int pc)
 {
-	struct ftrace_event_call *call = &event_funcgraph_exit;
+	struct trace_event_call *call = &event_funcgraph_exit;
 	struct ring_buffer_event *event;
 	struct ring_buffer *buffer = tr->trace_buffer.buffer;
 	struct ftrace_graph_ret_entry *entry;