arm: rmobile: lager: Remove RAM address initialization

Since board info structure is not still set up, the setting of RAM
address causes illegal access.
Therefore the setting of RAM address is removed.

Signed-off-by: Hisashi Nakamura <hisashi.nakamura.ak@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>

board/renesas/lager/lager.c

@@ -165,7 +165,6 @@ int board_phy_config(struct phy_device *phydev)
 
 int dram_init(void)
 {
-	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 	gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
 
 	return 0;