rcar_gen3: console: Convert to multi-console API

Convert the R-Car Gen3 platform and both SCIF and Log drivers
to multi-console API.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I18556973937d150b60453f9150d54ee612571e35
diff --git a/plat/renesas/rcar/include/rcar_private.h b/plat/renesas/rcar/include/rcar_private.h
index def3276..a76c023 100644
--- a/plat/renesas/rcar/include/rcar_private.h
+++ b/plat/renesas/rcar/include/rcar_private.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2018, Renesas Electronics Corporation. All rights reserved.
+ * Copyright (c) 2015-2019, Renesas Electronics Corporation. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -99,4 +99,9 @@
 void mstpcr_write(uint32_t mstpcr, uint32_t mstpsr, uint32_t target_bit);
 void cpg_write(uintptr_t regadr, uint32_t regval);
 
+void rcar_console_boot_init(void);
+void rcar_console_boot_end(void);
+void rcar_console_runtime_init(void);
+void rcar_console_runtime_end(void);
+
 #endif /* RCAR_PRIVATE_H */