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/spl/Makefile b/spl/Makefile
index 29d7818..2a787af 100644
--- a/spl/Makefile
+++ b/spl/Makefile
@@ -70,6 +70,7 @@
 LIBS-$(CONFIG_SPL_I2C_SUPPORT) += drivers/i2c/
 LIBS-$(CONFIG_SPL_GPIO_SUPPORT) += drivers/gpio/
 LIBS-$(CONFIG_SPL_MMC_SUPPORT) += drivers/mmc/
+LIBS-$(CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT) += drivers/ddr/fsl/
 LIBS-$(CONFIG_SPL_SERIAL_SUPPORT) += drivers/serial/
 LIBS-$(CONFIG_SPL_SPI_FLASH_SUPPORT) += drivers/mtd/spi/
 LIBS-$(CONFIG_SPL_SPI_SUPPORT) += drivers/spi/