linux/scripts: automate patch generation workflow
linux/scripts: automate patch generation workflow

./scripts/np auto <driver> will perform all the typical workflow,
as detailed at the beginning of ./scripts/np --help.

./scripts/np auto-all will complete all the steps for all the
available(*) drivers.

(*) the available drivers are those listed in the scripts/np script
itself. TODO: extract the available drivers from ./configure.

luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap,luigirizzo/netmap