PTP host: Implement getObjectHandles and getObjectInfo commands

Change-Id: I3ff6e52237f400b4e50c534a1f964c80789bfe98
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/media/mtp/MtpServer.cpp b/media/mtp/MtpServer.cpp
index 6a90568..88c08bf 100644
--- a/media/mtp/MtpServer.cpp
+++ b/media/mtp/MtpServer.cpp
@@ -360,7 +360,7 @@
     if (!mSessionOpen)
         return MTP_RESPONSE_SESSION_NOT_OPEN;
     MtpStorageID storageID = mRequest.getParameter(1);      // 0xFFFFFFFF for all storage
-    MtpObjectFormat format = mRequest.getParameter(2);      // 0x00000000 for all formats
+    MtpObjectFormat format = mRequest.getParameter(2);      // 0 for all formats
     MtpObjectHandle parent = mRequest.getParameter(3);      // 0xFFFFFFFF for objects with no parent
                                                             // 0x00000000 for all objects?