mpc83xx: Get rid of CONFIG_SYS_DDR_SDRAM_BASE

CONFIG_SYS_DDR_SDRAM_BASE is set to the same value as
CONFIG_SYS_SDRAM_BASE on all existing boards. Just use
CONFIG_SYS_SDRAM_BASE instead.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
diff --git a/board/ve8313/ve8313.c b/board/ve8313/ve8313.c
index 609585b..f4148a2 100644
--- a/board/ve8313/ve8313.c
+++ b/board/ve8313/ve8313.c
@@ -38,7 +38,7 @@
 	u32 msize_log2 = __ilog2(msize);
 
 	out_be32(&im->sysconf.ddrlaw[0].bar,
-		(CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000));
+		(CONFIG_SYS_SDRAM_BASE & 0xfffff000));
 	out_be32(&im->sysconf.ddrlaw[0].ar, (LBLAWAR_EN | (msize_log2 - 1)));
 	out_be32(&im->sysconf.ddrcdr, CONFIG_SYS_DDRCDR_VALUE);
 
@@ -48,12 +48,12 @@
 	 */
 	__udelay(50000);
 
-#if ((CONFIG_SYS_DDR_SDRAM_BASE & 0x00FFFFFF) != 0)
+#if ((CONFIG_SYS_SDRAM_BASE & 0x00FFFFFF) != 0)
 #warning Chip select bounds is only configurable in 16MB increments
 #endif
 	out_be32(&im->ddr.csbnds[0].csbnds,
-		((CONFIG_SYS_DDR_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
-		(((CONFIG_SYS_DDR_SDRAM_BASE + msize - 1) >> CSBNDS_EA_SHIFT) &
+		((CONFIG_SYS_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
+		(((CONFIG_SYS_SDRAM_BASE + msize - 1) >> CSBNDS_EA_SHIFT) &
 			CSBNDS_EA));
 	out_be32(&im->ddr.cs_config[0], CONFIG_SYS_DDR_CS0_CONFIG);