This way we'll get something in images/ by default, and hopefully people
will be less likely to try to use target/ directly.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The dependency on gzip, bzip2 and lzma are properly handled
automatically. No need to tell the user about this.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>