perf tools: Move timestamp routines from util.h to time-utils.h

We already have a header for time utilities, so use it.

Link: http://lkml.kernel.org/n/tip-sijzpbvutlg0c3oxn49hy9ca@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/builtin-record.c

@@ -38,6 +38,7 @@
 #include "util/bpf-loader.h"
 #include "util/trigger.h"
 #include "util/perf-hooks.h"
+#include "util/time-utils.h"
 #include "util/units.h"
 #include "asm/bug.h"