ARM: uniphier: remove CONFIG_SYS_SDRAM_BASE

The base address of DRAM was 0x80000000 for all the ARM SoCs of this
family in the past. It will be changed to 0x20000000 for a planned new
SoC. To support multiple SoCs by the single uniphier_v8_defconfig, the
base must be run-time determined.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/dram_init.c b/arch/arm/mach-uniphier/dram_init.c
index 970fa09..13821a9 100644
--- a/arch/arm/mach-uniphier/dram_init.c
+++ b/arch/arm/mach-uniphier/dram_init.c
@@ -33,7 +33,7 @@
 	val = readl(sg_base + SG_MEMCONF);
 
 	/* set up ch0 */
-	dram_map[0].base = CONFIG_SYS_SDRAM_BASE;
+	dram_map[0].base = 0x80000000;
 
 	switch (val & SG_MEMCONF_CH0_SZ_MASK) {
 	case SG_MEMCONF_CH0_SZ_64M:
@@ -255,6 +255,9 @@
 
 		gd->ram_size += dram_map[i].size;
 
+		if (!valid_bank_found)
+			gd->ram_base = dram_map[i].base;
+
 		prev_top = dram_map[i].base + dram_map[i].size;
 		valid_bank_found = true;
 	}