Add ext2, ext3, and vfat to releasetools

Support some non-standard partition that may be found in recovery.fstab

Conflicts:
	tools/releasetools/common.py

Change-Id: I0026a1d3ae5d432db10150d1a15f7bc8e7a6054b
diff --git a/tools/releasetools/common.py b/tools/releasetools/common.py
index 982e398..cdb5b7f 100644
--- a/tools/releasetools/common.py
+++ b/tools/releasetools/common.py
@@ -1364,7 +1364,10 @@
     "ext4": "EMMC",
     "emmc": "EMMC",
     "f2fs": "EMMC",
-    "squashfs": "EMMC"
+    "squashfs": "EMMC",
+    "ext2": "EMMC",
+    "ext3": "EMMC",
+    "vfat": "EMMC" }
 }
 
 def GetTypeAndDevice(mount_point, info):