rockchip: rk3188: sdram: Set correct sdram base

Right now we're setting the wrong value of 0 as base in the ram_info struct,
which is obviously wrong for the rk3188. So instead set the correct value
we already have in CONFIG_SYS_SDRAM_BASE.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Acked-by: NSimon Glass <sjg@chromium.org>

arch/arm/mach-rockchip/rk3188/sdram_rk3188.c

@@ -955,7 +955,7 @@ static int rk3188_dmc_probe(struct udevice *dev)
 	if (ret)
 		return ret;
 #endif
-	priv->info.base = 0;
+	priv->info.base = CONFIG_SYS_SDRAM_BASE;
 	priv->info.size = sdram_size_mb(priv->pmu) << 20;
 
 	return 0;