nvr: add support for UTC time sync

src/machine/m_europc.c

@@ -280,7 +280,7 @@ rtc_start(nvr_t *nvr)
     struct tm tm;
 
     /* Initialize the internal and chip times. */
-    if (enable_sync) {
+    if (enable_sync & TIME_SYNC_ENABLED) {
 	/* Use the internal clock's time. */
 	nvr_time_get(&tm);
 	rtc_time_set(nvr->regs, &tm);