rcar_gen3: drivers: ddr: Update DDR setting for H3, M3, M3N

[IPL/DDR]
- Update H3, M3, M3N DDR setting rev.0.40.

Signed-off-by: Chiaki Fujii <chiaki.fujii.wj@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com> # upstream update
Change-Id: If675796a2314e769602af21bf5cc6b10962d4f29
diff --git a/drivers/renesas/rcar/ddr/ddr_b/boot_init_dram.c b/drivers/renesas/rcar/ddr/ddr_b/boot_init_dram.c
index 1234fb6..ac83c9a 100644
--- a/drivers/renesas/rcar/ddr/ddr_b/boot_init_dram.c
+++ b/drivers/renesas/rcar/ddr/ddr_b/boot_init_dram.c
@@ -2080,8 +2080,8 @@
 	/* DBTR9.TRDPR : tRTP */
 	mmio_write_32(DBSC_DBTR(9), js2[js2_trtp]);
 
-	/* DBTR10.TWR : nWR + 1 */
-	mmio_write_32(DBSC_DBTR(10), js1[js1_ind].nwr + 1);
+	/* DBTR10.TWR : nWR */
+	mmio_write_32(DBSC_DBTR(10), js1[js1_ind].nwr);
 
 	/*
 	 * DBTR11.TRDWR : RL +  BL / 2 + Rounddown(tRPST) + PHY_ODTLoff -