vold: Add support for /dev/block/mmcblk1

Signed-off-by: Ethan.Du <a7233c@motorola.com>
Signed-off-by: San Mehat <san@google.com>
diff --git a/vold/media.h b/vold/media.h
index 567ce04..6fd8b84 100644
--- a/vold/media.h
+++ b/vold/media.h
@@ -28,6 +28,12 @@
     media_devmapper,
 } media_type_t;
 
+/*
+ * max 8 partitions per card
+ */
+#define MMC_PARTS_PER_CARD (1<<3)
+#define ALIGN_MMC_MINOR(min) (min / MMC_PARTS_PER_CARD * MMC_PARTS_PER_CARD)
+
 typedef struct media {
     char           *devpath;
     char           *name;