m28evk: Turn on caches

Turn on data and instruction caches.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/include/configs/m28evk.h b/include/configs/m28evk.h
index c52755e..ebf7d60 100644
--- a/include/configs/m28evk.h
+++ b/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