Move MTP code to the android namespace

Change-Id: I5da48038fd5e4cdeefaeba42cdc74eb588b3448d
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/media/mtp/MtpStringBuffer.cpp b/media/mtp/MtpStringBuffer.cpp
index 6b55c44..8694575 100644
--- a/media/mtp/MtpStringBuffer.cpp
+++ b/media/mtp/MtpStringBuffer.cpp
@@ -19,6 +19,7 @@
 #include "MtpDataPacket.h"
 #include "MtpStringBuffer.h"
 
+namespace android {
 
 MtpStringBuffer::MtpStringBuffer()
     :   mCharCount(0),
@@ -131,3 +132,5 @@
         packet->putUInt16(ch);
     }
 }
+
+}  // namespace android