powerpc/mpc8349: Use generic mpc85xx DDR driver

MPC8349 has been using mpc85xx DDR driver through a symbolic link to
mpc85xx_ddr_gen2.c. After consolidating the drivers to a single set
under driver/ddr/fsl/, the link is replaced by referring driver
directly. We now can simply enable the macro and use the driver.
Other mpc83xx SoCs still use their own driver.

Signed-off-by: York Sun <yorksun@freescale.com>

arch/powerpc/cpu/mpc83xx/Makefile

@@ -38,9 +38,7 @@ obj-$(CONFIG_OF_LIBFDT) += fdt.o
 # Stub implementations of cache management functions for USB
 obj-y += cache.o
 
-ifdef CONFIG_SYS_FSL_DDR2
-obj-$(CONFIG_MPC8349) += $(SRCTREE)/drivers/ddr/fsl/mpc85xx_ddr_gen2.o
-else
+ifndef CONFIG_SYS_FSL_DDRC_GEN2
 obj-y += spd_sdram.o
 endif
 obj-$(CONFIG_SYS_FSL_DDR2) += law.o

include/configs/MPC8349EMDS.h

@@ -67,6 +67,7 @@
  */
 #define CONFIG_SYS_FSL_DDR2
 #ifdef CONFIG_SYS_FSL_DDR2
+#define CONFIG_SYS_FSL_DDRC_GEN2
 #define CONFIG_SYS_SPD_BUS_NUM	0
 #define SPD_EEPROM_ADDRESS1	0x52
 #define SPD_EEPROM_ADDRESS2	0x51