rcar_gen3: plat: Rename RCAR_PRODUCT_* to PRR_PRODUCT_*

Rename RCAR_PRODUCT_* to PRR_PRODUCT_* and drop the duplicate
RCAR_PRODUCT_* macro.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Change-Id: I6b2789790b85edb79c026f0860d70f323d113d96
diff --git a/drivers/renesas/rcar/iic_dvfs/iic_dvfs.c b/drivers/renesas/rcar/iic_dvfs/iic_dvfs.c
index 39b9bb4..28b56c1 100644
--- a/drivers/renesas/rcar/iic_dvfs/iic_dvfs.c
+++ b/drivers/renesas/rcar/iic_dvfs/iic_dvfs.c
@@ -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
  */
@@ -189,8 +189,8 @@
 	mode = mmio_read_8(IIC_DVFS_REG_ICCR) | IIC_DVFS_BIT_ICCR_ENABLE;
 	mmio_write_8(IIC_DVFS_REG_ICCR, mode);
 
-	lsi_product = mmio_read_32(RCAR_PRR) & RCAR_PRODUCT_MASK;
-	if (lsi_product == RCAR_PRODUCT_E3)
+	lsi_product = mmio_read_32(RCAR_PRR) & PRR_PRODUCT_MASK;
+	if (lsi_product == PRR_PRODUCT_E3)
 		goto start;
 
 	reg = mmio_read_32(RCAR_MODEMR) & CHECK_MD13_MD14;