fix mmcutils usage

Change-Id: I04db586599af21f64174b0e656201c724bf82050
diff --git a/Android.mk b/Android.mk
index d9ac788..80fa6d3 100644
--- a/Android.mk
+++ b/Android.mk
@@ -130,6 +130,10 @@
   LOCAL_STATIC_LIBRARIES += libbmlutils
 endif
 
+ifdef BOARD_USES_MMCUTILS
+  LOCAL_CFLAGS += -DBOARD_USES_MMCUTILS
+endif
+
 ifdef BOARD_HAS_SMALL_RECOVERY
   LOCAL_CFLAGS += -DBOARD_HAS_SMALL_RECOVERY
 endif