microblaze: Change cache report messages

It is more accurate to show that caches are OFF instead of FAIL.

Signed-off-by: Michal Simek <monstr@monstr.eu>
diff --git a/arch/microblaze/lib/board.c b/arch/microblaze/lib/board.c
index 1d44a64..41a1db6 100644
--- a/arch/microblaze/lib/board.c
+++ b/arch/microblaze/lib/board.c
@@ -116,8 +116,8 @@
 	}
 
 	puts ("SDRAM :\n");
-	printf ("\t\tIcache:%s\n", icache_status() ? "OK" : "FAIL");
-	printf ("\t\tDcache:%s\n", dcache_status() ? "OK" : "FAIL");
+	printf ("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF");
+	printf ("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF");
 	printf ("\tU-Boot Start:0x%08x\n", TEXT_BASE);
 
 #if defined(CONFIG_CMD_FLASH)