Enable L2 cache for MPC8568MDS board

The L2 cache size is 512KB for 8568, print out the correct informaiton.
Signed-off-by: NHaiying Wang <Haiying.Wang@freescale.com>

cpu/mpc85xx/cpu_init.c

@@ -247,7 +247,7 @@ int cpu_init_r(void)
 	switch (cache_ctl & 0x30000000) {
 	case 0x20000000:
 		if (ver == SVR_8548 || ver == SVR_8548_E ||
-		    ver == SVR_8544) {
+		    ver == SVR_8544 || ver == SVR_8568_E) {
 			printf ("L2 cache 512KB:");
 			/* set L2E=1, L2I=1, & L2SRAM=0 */
 			cache_ctl = 0xc0000000;

include/configs/MPC8568MDS.h

@@ -63,9 +63,9 @@ extern unsigned long get_clock_freq(void);
 /*
  * These can be toggled for performance analysis, otherwise use default.
  */
-/*#define CONFIG_L2_CACHE*/		    	    /* toggle L2 cache 	*/
-#define CONFIG_BTB						/* toggle branch predition */
-#define CONFIG_ADDR_STREAMING		    /* toggle addr streaming   */
+#define CONFIG_L2_CACHE				/* toggle L2 cache 	*/
+#define CONFIG_BTB				/* toggle branch predition */
+#define CONFIG_ADDR_STREAMING			/* toggle addr streaming   */
 
 /*
  * Only possible on E500 Version 2 or newer cores.