Add elksmart-comm for transceiving infrared codes

The receive functionality is quite unstable,
however useful enough for something that is officially unsupported.

The gadget is picky about cables,
but it has ridiculous reach when it works.

ddc-ci.c

@@ -46,7 +46,7 @@ log_message_custom (void *user_data, const char *quote, const char *fmt,
 static void
 wait_ms (long ms)
 {
-	struct timespec ts = { 0, ms * 1000 * 1000 };
+	struct timespec ts = { ms / 1000, (ms % 1000) * 1000 * 1000 };
 	nanosleep (&ts, NULL);
 }