added debuginfo for marshall london phone https://sourceforge.net/p/libmtp/bugs/1520/
added debuginfo for marshall london phone
https://sourceforge.net/p/libmtp/bugs/1520/

libmtp/libmtp,libmtp/libmtp,philipl/libmtp,philipl/libmtp,philipl/libmtp,libmtp/libmtp