mx28evk: Turn on caches

Turn on data and instruction caches.

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

include/configs/mx28evk.h

@@ -31,8 +31,6 @@
 #define CONFIG_MACH_TYPE	MACH_TYPE_MX28EVK
 
 #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