Driver/DDR: Moving Freescale DDR driver to a common driver

Freescale DDR driver has been used for mpc83xx, mpc85xx, mpc86xx SoCs.
The similar DDR controllers will be used for ARM-based SoCs.

Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/board/socrates/Makefile b/board/socrates/Makefile
index 0a08810..79bda71 100644
--- a/board/socrates/Makefile
+++ b/board/socrates/Makefile
@@ -12,4 +12,4 @@
 obj-y	+= tlb.o
 obj-y	+= nand.o
 obj-y	+= sdram.o
-obj-$(CONFIG_FSL_DDR2) += ddr.o
+obj-$(CONFIG_SYS_FSL_DDR2) += ddr.o