make etcfiles: small fix in Makefile
make etcfiles: small fix in Makefile

Keep the MKUNPRIVED=yes stuff with the installation
of master.passwd, i.e. away from make etcfiles

veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi,veritas-shine/minix3-rpi