m28evk: Turn on caches

Turn on data and instruction caches.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

include/configs/m28evk.h

@@ -37,8 +37,6 @@
 #define	CONFIG_MACH_TYPE	MACH_TYPE_M28EVK
 
 #define	CONFIG_SYS_NO_FLASH
-#define	CONFIG_SYS_ICACHE_OFF
-#define	CONFIG_SYS_DCACHE_OFF
 #define	CONFIG_BOARD_EARLY_INIT_F
 #define	CONFIG_ARCH_MISC_INIT