lock memory spaces of all devices where they have been missing. Add
the lock memory space to the ATmega48 section.
Closes bug #14920: tiny2313 fuses and AVRDUDE 5.0
Closes bug #15751: atmega48: no lock bits defined
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@619 81a1dc3b-b13d-400b-aceb-764788c761c2