microblaze: Use cache functions (especially cache status)

in systems which are configured without flash

cpu/microblaze/cache.c

@@ -25,8 +25,6 @@
 #include <common.h>
 #include <asm/asm.h>
 
-#if defined(CONFIG_CMD_CACHE)
-
 int dcache_status (void)
 {
 	int i = 0;
@@ -62,4 +60,3 @@ void	dcache_enable (void) {
 void	dcache_disable(void) {
 	MSRCLR(0x80);
 }
-#endif

lib_microblaze/board.c

@@ -137,11 +137,8 @@ void board_init (void)
 	}
 
 	puts ("SDRAM :\n");
-#if defined(CONFIG_CMD_CACHE)
-	puts ("\tEnabling caches :\n");
 	printf ("\t\tIcache:%s\n", icache_status() ? "OK" : "FAIL");
 	printf ("\t\tDcache:%s\n", dcache_status() ? "OK" : "FAIL");
-#endif
 	printf ("\tU-Boot Start:0x%08x\n", TEXT_BASE);
 
 #if defined(CONFIG_CMD_FLASH)