perf report: Fix placement of itrace option in documentation

Unwittingly the itrace options for perf report ended up below the
Overhead Calculation section. Move it back with the other options.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1430404667-10593-2-git-send-email-adrian.hunter@intel.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/Documentation/perf-report.txt

@@ -324,9 +324,6 @@ OPTIONS
 --header-only::
 	Show only perf.data header (forces --stdio).
 
-
-include::callchain-overhead-calculation.txt[]
-
 --itrace::
 	Options for decoding instruction tracing data. The options are:
 
@@ -354,6 +351,9 @@ include::callchain-overhead-calculation.txt[]
 
 	To disable decoding entirely, use --no-itrace.
 
+
+include::callchain-overhead-calculation.txt[]
+
 SEE ALSO
 --------
 linkperf:perf-stat[1], linkperf:perf-annotate[1]