fix(rcar): use platform_def

The definitions are duplicate and cause compilation errors when includes
change.

Change-Id: Iadc45e053918b5e13fa12f0b371e5e77b56aef22
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
diff --git a/drivers/renesas/common/scif/scif.S b/drivers/renesas/common/scif/scif.S
index 72b5b4b..22ade9b 100644
--- a/drivers/renesas/common/scif/scif.S
+++ b/drivers/renesas/common/scif/scif.S
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2015-2021, Renesas Electronics Corporation. All rights reserved.
+ * Copyright (c) 2025, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -8,18 +9,13 @@
 #include <asm_macros.S>
 #include <console_macros.S>
 #include <drivers/renesas/rcar/console/console.h>
+#include <platform_def.h>
 
 #define SCIF_INTERNAL_CLK	0
 #define SCIF_EXTARNAL_CLK	1
 #define SCIF_CLK		SCIF_INTERNAL_CLK
 
-/* product register */
-#define PRR			(0xFFF00044)
-#define PRR_PRODUCT_MASK	(0x00007F00)
-#define PRR_CUT_MASK		(0x000000FF)
 #define PRR_PRODUCT_H3_VER_10	(0x00004F00)
-#define PRR_PRODUCT_E3		(0x00005700)
-#define PRR_PRODUCT_D3		(0x00005800)
 
 /* module stop */
 #define CPG_BASE		(0xE6150000)
@@ -60,7 +56,6 @@
 #endif
 
 /* mode pin */
-#define RST_MODEMR		(0xE6160060)
 #define MODEMR_MD12		(0x00001000)
 
 #define SCSMR_CA_MASK		(1 << 7)