perf tools: Add missing util.h to pick up 'page_size' variable

Not to depend of getting it indirectly.

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-tirjsmvu4ektw0k7lm8k9lhu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/arch/arm/util/cs-etm.c

@@ -22,6 +22,7 @@
 #include "../../util/pmu.h"
 #include "../../util/thread_map.h"
 #include "../../util/cs-etm.h"
+#include "../../util/util.h"
 
 #include <errno.h>
 #include <stdlib.h>

tools/perf/arch/x86/tests/intel-cqm.c

@@ -6,6 +6,7 @@
 #include "evlist.h"
 #include "evsel.h"
 #include "arch-tests.h"
+#include "util.h"
 
 #include <signal.h>
 #include <sys/mman.h>

tools/perf/arch/x86/util/intel-pt.c

@@ -25,6 +25,7 @@
 #include "../../util/auxtrace.h"
 #include "../../util/tsc.h"
 #include "../../util/intel-pt.h"
+#include "../../util/util.h"
 
 #define KiB(x) ((x) * 1024)
 #define MiB(x) ((x) * 1024 * 1024)

tools/perf/perf.c

@@ -18,6 +18,7 @@
 #include "util/bpf-loader.h"
 #include "util/debug.h"
 #include "util/event.h"
+#include "util/util.h"
 #include <api/fs/fs.h>
 #include <api/fs/tracing_path.h>
 #include <errno.h>

tools/perf/util/machine.c

@@ -15,6 +15,7 @@
 #include "strlist.h"
 #include "thread.h"
 #include "vdso.h"
+#include "util.h"
 #include <stdbool.h>
 #include <sys/types.h>
 #include <sys/stat.h>

tools/perf/util/python.c

@@ -12,6 +12,7 @@
 #include "print_binary.h"
 #include "thread_map.h"
 #include "mmap.h"
+#include "util.h"
 
 #if PY_MAJOR_VERSION < 3
 #define _PyUnicode_FromString(arg) \