rcar_gen3: drivers: staging

 - ddr
 - pfc [pin function controller]
 - qos [bandwidth]

checkpatch.pl is generating too many errors.
diff --git a/drivers/staging/renesas/rcar/qos/qos_init.h b/drivers/staging/renesas/rcar/qos/qos_init.h
new file mode 100644
index 0000000..d2f3ec8
--- /dev/null
+++ b/drivers/staging/renesas/rcar/qos/qos_init.h
@@ -0,0 +1,13 @@
+/*
+ * Copyright (c) 2015-2018, Renesas Electronics Corporation. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef QOS_INIT_H_
+#define QOS_INIT_H_
+
+extern void rcar_qos_init(void);
+extern uint8_t get_boardcnf_phyvalid(void);
+
+#endif /* QOS_INIT_H_ */