I quickly put these together a few days ago for Fremantle: http://wnd.katei.fi/tmp/mosh/ . As the URL suggests, this isn't a polished package but it Works For Me(mt).

Other dependencies can be found at extras*. Sources are from mosh git (and not for the latest release) and are patched with fix_arm_alignment.diff that's supposedly included in debian/patches somewhere. Use at your own risk.