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/sbc8349/sbc8349.c b/board/sbc8349/sbc8349.c
index 5584b3d..e51eeae 100644
--- a/board/sbc8349/sbc8349.c
+++ b/board/sbc8349/sbc8349.c
@@ -79,19 +79,19 @@
 	u32 ddr_size = msize << 20;	/* DDR size in bytes */
 	u32 ddr_size_log2 = __ilog2(msize);
 
-	im->sysconf.ddrlaw[0].bar = CONFIG_SYS_DDR_SDRAM_BASE & 0xfffff000;
+	im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000;
 	im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);
 
 #if (CONFIG_SYS_DDR_SIZE != 256)
 #warning Currently any ddr size other than 256 is not supported
 #endif
 
-#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
 	im->ddr.csbnds[2].csbnds =
-		((CONFIG_SYS_DDR_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
-		(((CONFIG_SYS_DDR_SDRAM_BASE + ddr_size - 1) >>
+		((CONFIG_SYS_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
+		(((CONFIG_SYS_SDRAM_BASE + ddr_size - 1) >>
 				CSBNDS_EA_SHIFT) & CSBNDS_EA);
 	im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;