tracing: Rename ftrace_event.h to trace_events.h

The term "ftrace" is really the infrastructure of the function hooks,
and not the trace events. Rename ftrace_event.h to trace_events.h to
represent the trace_event infrastructure and decouple the term ftrace
from it.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --cc arch/x86/kvm/mmutrace.h
Simple merge

diff --cc arch/x86/kvm/svm.c
Simple merge

diff --cc arch/x86/kvm/vmx.c
Simple merge

diff --cc include/linux/trace_events.h
Simple merge

diff --cc include/trace/events/power.h
Simple merge

diff --cc include/trace/syscall.h
Simple merge

diff --cc include/trace/trace_events.h
Simple merge

diff --cc kernel/events/core.c
Simple merge

diff --cc kernel/module.c
Simple merge

diff --cc kernel/rcu/tiny.c
Simple merge

diff --cc kernel/rcu/tree.c
Simple merge

diff --cc kernel/trace/ring_buffer.c
Simple merge

diff --cc kernel/trace/trace.h
Simple merge

diff --cc mm/debug.c
Simple merge