adi/rc-dff: Add Initial implementaion

* Add ADI vendor

Copy Intel Mohon Peak mainboard to ADI vendor. No functional changes,
only string and ifdef names changed.

Change-Id: I25a6d0ec549c79a8ff149d39f72648f625dc36fe
Signed-off-by: Chris Ching <chingcodes@google.com>
Reviewed-on: https://review.coreboot.org/14778
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/mainboard/adi/rcc-dff/irqroute.c b/src/mainboard/adi/rcc-dff/irqroute.c
new file mode 100644
index 0000000..2bf03ce
--- /dev/null
+++ b/src/mainboard/adi/rcc-dff/irqroute.c
@@ -0,0 +1,19 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2013 Google Inc.
+ * Copyright (C) 2014 Sage Electronics Engineering, LLC.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "irqroute.h"
+
+DEFINE_IRQ_ROUTES;