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-kvm.c

@@ -24,6 +24,7 @@
 #ifdef HAVE_TIMERFD_SUPPORT
 #include <sys/timerfd.h>
 #endif
+#include <sys/time.h>
 
 #include <linux/kernel.h>
 #include <linux/time64.h>