imx: mx53loco: Add raw initrd support

Signed-off-by: Guillaume GARDET <guillaume.gardet@free.fr>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Jason Liu <r64343@freescale.com>
Acked-by: Jason Liu <r64343@freescale.com>
diff --git a/include/configs/mx53loco.h b/include/configs/mx53loco.h
index 10fb1f4..42bc3c8 100644
--- a/include/configs/mx53loco.h
+++ b/include/configs/mx53loco.h
@@ -94,6 +94,7 @@
 /* Command definition */
 #include <config_cmd_default.h>
 #define CONFIG_CMD_BOOTZ
+#define CONFIG_SUPPORT_RAW_INITRD
 
 #undef CONFIG_CMD_IMLS