Some more 64bit function eradication.

. Replace 64bit funcions with operators in arch_clock.c
  . Replace 64bit funcions with operators in proc.c
  . Replace 64bit funcions with operators in vbox.c
  . Replace 64bit funcions with operators in driver.c
  . Eradicates is_zero64, make_zero64, neg64

Change-Id: Ie4e1242a73534f114725271b2e2365b2004cb7b9

drivers/vbox/vbox.c

@@ -161,7 +161,7 @@ static void vbox_update_time(void)
 			sizeof(*req)) == VMMDEV_ERR_OK) {
 		time(&otime);				/* old time */
 
-		ntime = div64u(req->time, 1000);	/* new time */
+		ntime = (unsigned long)(req->time / 1000);	/* new time */
 
 		/* Make time go forward, if the difference exceeds the drift
 		 * threshold. Never make time go backward.