fastboot: Include header for ostream_iterator and istream_iterator

This fixes the following compiler errors with gcc

storage.cpp:45:20: error: 'ostream_iterator' is not a member of 'std'
storage.cpp:50:10: error: 'istream_iterator' is not a member of 'std'

Change-Id: I570e332d100bb18e445644a9d57dc14d80f104b5