MPC8568/MPC8569: Remove CONFIG_DDR_DLL define

Neither of these parts should have the erratum this is meant to
work around.  Delete it.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

include/configs/MPC8568MDS.h

@@ -82,7 +82,6 @@ extern unsigned long get_clock_freq(void);
 #undef CONFIG_FSL_DDR_INTERACTIVE
 #define CONFIG_SPD_EEPROM		/* Use SPD EEPROM for DDR setup*/
 #define CONFIG_DDR_SPD
-#define CONFIG_DDR_DLL			/* possible DLL fix needed */
 #define CONFIG_ECC_INIT_VIA_DDRCONTROLLER	/* DDR controller or DMA? */
 
 #define CONFIG_MEM_INIT_VALUE	0xDeadBeef

include/configs/MPC8569MDS.h

@@ -122,7 +122,6 @@ extern unsigned long get_clock_freq(void);
 #undef CONFIG_FSL_DDR_INTERACTIVE
 #define CONFIG_SPD_EEPROM		/* Use SPD EEPROM for DDR setup*/
 #define CONFIG_DDR_SPD
-#define CONFIG_DDR_DLL			/* possible DLL fix needed */
 #define CONFIG_ECC_INIT_VIA_DDRCONTROLLER	/* DDR controller or DMA? */
 
 #define CONFIG_MEM_INIT_VALUE	0xDeadBeef