mx31pdk: Enable D and I caches

Enable D and I caches on mx31pdk.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>

board/freescale/mx31pdk/mx31pdk.c

@@ -71,11 +71,19 @@ int board_early_init_f(void)
 	return 0;
 }
 
+void enable_caches(void)
+{
+	icache_enable();
+	dcache_enable();
+}
+
 int board_init(void)
 {
 	/* adress of boot parameters */
 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
 
+	enable_caches();
+
 	return 0;
 }