perf tests: Add missing headers so far obtained indirectly

We're going to remove symbol.h from some places and this breaks
some of the perf tests, fix it by adding the required includes.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-wpa4b6x0btpnh2kjxzl9no4w@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/tests/sample-parsing.c

@@ -1,9 +1,11 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <stdbool.h>
 #include <inttypes.h>
+#include <linux/bitops.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 
+#include "branch.h"
 #include "util.h"
 #include "event.h"
 #include "evsel.h"

tools/perf/tests/sdt.c

@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <sys/epoll.h>
 #include <util/evlist.h>
+#include <util/symbol.h>
 #include <linux/filter.h>
 #include "tests.h"
 #include "debug.h"