Put extra image files in a make variable
Put extra image files in a make variable

This makes it easy to add scripts and such to the file system image.

aclements/sv6,aclements/sv6,bowlofstew/sv6,aclements/sv6,bowlofstew/sv6,bowlofstew/sv6,aclements/sv6,bowlofstew/sv6,bowlofstew/sv6,aclements/sv6